1.
Time in Europe
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Europe spans 7 primary time zones, excluding summer time offsets. Most European countries use summer time and harmonise their summer time adjustments, see Summer time in Europe for details. The time zones actually in use in Europe differ significantly from their pure theoretical variants as used for example under the time system. Theoretically the world is divided into 24 time zones of 15 degrees, however, due to geographical and cultural factors it is not practical to divide the world so evenly and actual time zones may differ significantly from their theoretical borders. In Europes case, the use of the Central European Time Zone causes a major distortion in some areas from the theoretical time or the solar time. CET is theoretically centred on 15°E, however, Spain lying almost entirely in the Western hemisphere, and France with some regions to the west should theoretically use UTC, as they did before the Second World War. The general result is a solar noon which is later than clock noon. This results in later sunrises and sunsets than should theoretically happen, the Benelux countries should also theoretically use GMT. Russia and Belarus have observed permanent summer time between March 2011 and October 2014, since October 2014 Russia observed permanent winter time. Iceland can be considered to be on de facto permanent summer time because, since 1968, it uses UTC time all year, despite being located more than 15° west of the prime meridian. It should therefore be located in UTC-1, but chooses to remain closer to continental European time, of the 28 EU member states,3 use Western European Time and 8 use Eastern European Time. The other 17 member states all use Central European Time, norway, Switzerland, Serbia, Kosovo, Macedonia, Montenegro, San Marino, Vatican City, Andorra, Monaco and Liechtenstein also observe the Central European Time. Northern Cyprus and Transnistria observe the Eastern European Time, azores, in Portugal, observes the Atlantic/Azores Time and the Canary Islands, in Spain, observes the Western European Time. Moldova, Belarus and Ukraine observe the Eastern European Time
2.
Western European Time
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Western European Time is a time zone covering parts of western and northwestern Europe. WEST is called British Summer Time in the UK and is known as Irish Standard Time in Ireland. Conversely, Iceland and eastern Greenland are included although both are west of 7. 5°W, in September 2013, a Spanish parliamentary committee recommended switching to WET, a move being considered by MPs. However, the German occupation switched France to German time, two other occupied territories, Belgium and the Netherlands, did the same, and Spain also switched to CET in solidarity with Germany under the orders of General Franco. In the United Kingdom, from 1940 to 1945 British Summer Time was used in winters, between 18 February 1968 and 31 October 1971, BST was used all year round. In Ireland, from 1940 to 1946 Irish Summer Time was used all year round, between 18 February 1968 and 31 October 1971, Irish Standard Time was used all year round. In Portugal, CET was used in the mainland from 1966 to 1976, the autonomous region of the Azores used WET from 1992 to 1993. Iceland Mykines, Faroe Islands Western Ireland Western Portugal Madeira Canary Islands These areas are located between 7°30′ W and 22°30′ W Areas using UTC+1, See Central European Time
3.
Western European Summer Time
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Western European Summer Time is a summer daylight saving time scheme,1 hour ahead of Coordinated Universal Time. Also sometimes erroneously referred to as Irish Summer Time, the scheme runs from the last Sunday in March to the last Sunday in October each year. At both the start and end of the schemes, clock changes take place at 01,00 UTC, during the winter, Greenwich Mean Time is used. The asymmetry reflects temperature more than the length of daylight, Ireland observes Standard Time during the summer months and changes to UTC+0 in winter. As Irelands winter time period begins on the last Sunday in October and finishes on the last Sunday in March, the result is the same as if it observed summer time. The following countries and territories use Western European Summer Time during the summer, starting in 1916, the dates for the beginning and end of BST each year were mandated by the Parliament of the United Kingdom. In February 2002, the Summer Time Order 2002 changed the dates and times to match European rules for moving to, note, Until 1 October 1916 time in all of Ireland was based on Dublin Mean Time, GMT −25 minutes. BBC News report, Tundra time call in clocks debate, UK Government Report, Overview of the pros and cons of British Summer Time
4.
Irish Standard Time
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Ireland uses Irish Standard Time in the summer months and Greenwich Mean Time in the winter period. In Ireland, the Standard Time Act 1968 legally established that the time for purposes in the State shall be one hour in advance of Greenwich mean time throughout the year. This act was amended by the Standard Time Act 1971, which legally established Greenwich Mean Time as a time period. Ireland therefore operates one hour behind standard time during the winter period and this is defined in contrast to the other states in the European Union, which operate one hour ahead of standard time during the summer period, but produces the same end result. The instant of transition to and from saving time is synchronised across Europe. In Ireland, Winter time begins at 02,00 IST on the last Sunday in October, the Statutes Act,1880 defined Dublin Mean Time as the legal time for Ireland. T. M. Healy opposed the reading on the basis that while the Daylight Saving Bill added to the length of your daylight. After the Irish Free State became independent in 1922, subsequent developments tended to mirror those in the United Kingdom and this avoided having different times on either side of the border with Northern Ireland. Summer time was provided on a basis by acts in 1923 and 1924. The 1925 act provided a summer time period, which could be varied by ministerial order. Double summer time was considered but not introduced during the Emergency of World War II, from 1968 standard time was observed all year round, with no winter time change. This was an experiment in the run-up to Irelands 1973 accession to the EEC, in those years, time in Ireland was the same as in the six EEC countries, except in the summer in Italy, which switched to Central European Summer Time. From the 1980s, the dates of switch between winter and summer time have been synchronised across the European Union. The statutory instruments that have been issued under the Standard Time Acts are listed below, in format year/SI-number, except where stated, those issued up to 1967 were called Summer Time Order <year>, while those issued from 1981 are Winter Time Order <year>. In November 2012, Tommy Broughan introduced a members bill to permit a three-year trial of advancing time by one hour, to CET in winter. In July 2014, the joint committee issued an invitation for submissions on the bill, closing time in Irish public houses was half an hour later during summer time. In 2000, the closing hours were simplified by removing summer/winter time changes. Between 1933 and 1961, lighting-up time was an hour before/after sunrise/sunset in summer-time, since 1961, it has been half-an-hour in all cases
5.
Central European Summer Time
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It corresponds to UTC + two hours. Other names which have been applied to Central European Summer Time are Middle European Summer Time, Central European Daylight Saving Time, and Bravo Time. Since 1996 European Summer Time has been observed between 1,00 UTC on the last Sunday of March and 1,00 on the last Sunday of October, the following countries and territories use Central European Summer Time. In addition, Libya used CEST during the years 1951–1959, 1982–1989, 1996–1997, European Summer Time Other countries and territories in UTC+2 time zone Other names of UTC+2 time zone
6.
Eastern European Time
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Eastern European Time is one of the names of UTC+02,00 time zone,2 hours ahead of Coordinated Universal Time. The zone uses daylight saving time, so that it uses UTC+03,00 during the summer, a number of African countries use UTC+02,00 all year long, where it is called Central Africa Time, although Egypt and Libya also use the term Eastern European Time. The following countries, parts of countries, and territories use Eastern European Time all year round, Egypt, since 21 April 2015, used EEST from 1988–2010, Kaliningrad Oblast, since 26 October 2014, also used EET in years 1945 and 1991–2011. Libya, since 27 October 2013, switched from Central European Time, used year-round EET from 1980–1981, 1990–1996 and 1998–2012. Belarus, in years 1922–30 and 1990–2011 In Poland this time was used in years 1918–22, in time of World War II, Germany implemented MET in east occupied territories. Republic of Crimea and Sevastopol used EET as part of Ukraine in years 1991-94 and 1996-2014 Turkey, used EET in years 1910-1978, now uses year round DST timezone called Further-eastern European Time or Turkey Time. The Turkish Republic of Northern Cyprus also uses FET, sometimes, due to its use on Microsoft Windows, FLE Standard Time or GTB Standard Time are used to refer to Eastern European Time. Since political, in addition to geographical, criteria are used in the drawing of time zones. The EET time zone, were it drawn by purely geographical terms, the easternmost part of the Republic of Macedonia, including the city of Strumica. The absolutely easternmost part of Serbia, in the Pirot District, the easternmost town in Norway, Vardø, lies at 30°51 E, which is located east of even of the central meridian of UTC+2, i. e. east of Istanbul and Alexandria. The Norwegian-Russian border is the place where CET borders Moscow time. There is a point at the Norway-Finland-Russia tripoint, near the town of Rayakoski. Belarus is located between 23°11′E and 32°47′E and is fully located with the physical UTC+2 area, but it uses UTC+3 year around. This also includes the city of Anapa, at the westernmost tip of the Krasnodar Krai near the entrance to the Sea of Azov, the Norway–Russia–Finland tri-zone point at Muotkavaara is surrounded by three different times in winter, two in summer. It had three time zones year-around before 2014, two of the four tripoints of Belarus and the tripoint of the Kaliningrad Region are surrounded by three different times in winter
7.
Eastern European Summer Time
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Eastern European Summer Time is one of the names of UTC+3 time zone,3 hours ahead of Coordinated Universal Time. It is used as a daylight saving time in some European and Middle Eastern countries. During the winter periods, Eastern European Time is used, since 1996 European Summer Time has been observed from the last Sunday in March to the last Sunday in October, previously the rules were not uniform across the European Union. Syria, since 1983 Ukraine, Moscow Summer Time in years 1981–89, regular EEST from 1992 In one year 1991 EEST was used also in Moscow, egypt has previously used EEST from 1957–2010 and 2014–2015. Turkey, has previously used EEST from 1970-1978 EEST, Moscow Summer Time from 1979–1983, and EEST from 1985-2016
8.
Further-eastern European Time
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Further-eastern European Time is a time zone defined as three hours ahead of UTC without daylight saving time. As of September 2016, it is used in Belarus, western Russia and Turkey, the zone was established in October 2011 as the official time for the Kaliningrad Oblast in Russia, and then followed by Belarus. Several African and Middle Eastern countries use UTC+03,00 all year long, until 2011, Further-eastern European Time was identical to Eastern European Time. Belarus followed Russia on 15 September 2011, and the decision was made by the Ukrainian parliament on 20 September 2011. After strong criticism from the media, on 18 October 2011 the Ukrainian parliament cancelled its previous decision. The name Further-eastern European Time seems to have come from work on the tz database, Time zone UTC+03,00 Time in Ukraine Time in Turkey
9.
Daylight saving time
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Daylight saving time is the practice of advancing clocks during summer months by one hour so that evening daylight lasts an hour longer, while sacrificing normal sunrise times. Typically, regions that use Daylight Savings Time adjust clocks forward one hour close to the start of spring, American inventor and politician Benjamin Franklin proposed a form of daylight time in 1784. New Zealander George Hudson proposed the idea of saving in 1895. The German Empire and Austria-Hungary organized the first nationwide implementation, starting on April 30,1916, many countries have used it at various times since then, particularly since the energy crisis of the 1970s. The practice has both advocates and critics, DST clock shifts sometimes complicate timekeeping and can disrupt travel, billing, record keeping, medical devices, heavy equipment, and sleep patterns. Computer software often adjusts clocks automatically, but policy changes by various jurisdictions of DST dates, industrialized societies generally follow a clock-based schedule for daily activities that do not change throughout the course of the year. The time of day that individuals begin and end work or school, North and south of the tropics daylight lasts longer in summer and shorter in winter, with the effect becoming greater as one moves away from the tropics. However, they will have one hour of daylight at the start of each day. Supporters have also argued that DST decreases energy consumption by reducing the need for lighting and heating, DST is also of little use for locations near the equator, because these regions see only a small variation in daylight in the course of the year. After ancient times, equal-length civil hours eventually supplanted unequal, so civil time no longer varies by season, unequal hours are still used in a few traditional settings, such as some monasteries of Mount Athos and all Jewish ceremonies. This 1784 satire proposed taxing window shutters, rationing candles, and waking the public by ringing church bells, despite common misconception, Franklin did not actually propose DST, 18th-century Europe did not even keep precise schedules. However, this changed as rail transport and communication networks came to require a standardization of time unknown in Franklins day. Modern DST was first proposed by the New Zealand entomologist George Hudson, whose shift work job gave him time to collect insects. An avid golfer, he also disliked cutting short his round at dusk and his solution was to advance the clock during the summer months, a proposal he published two years later. The proposal was taken up by the Liberal Member of Parliament Robert Pearce, a select committee was set up to examine the issue, but Pearces bill did not become law, and several other bills failed in the following years. Willett lobbied for the proposal in the UK until his death in 1915, william Sword Frost, mayor of Orillia, Ontario, introduced daylight saving time in the municipality during his tenure from 1911 to 1912. Starting on April 30,1916, the German Empire and its World War I ally Austria-Hungary were the first to use DST as a way to conserve coal during wartime, Britain, most of its allies, and many European neutrals soon followed suit. Russia and a few other countries waited until the year
10.
South African Standard Time
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South African Standard Time is the time zone used by all of South Africa, as well as Swaziland and Lesotho. The zone is two hours ahead of UTC and is the same as Central Africa Time, daylight saving time is not observed in either time zone. Thus, most of South Africas population experience true solar noon at approximately 12,00 daily, the western Northern Cape and Western Cape differ however. Everywhere on land west of 22°30′ E effectively experiences year-round daylight saving time because of its location in true UTC+1, sunrise and sunset are thus relatively late in Cape Town compared to the rest of the country. Before 8 February 1892, there was no uniformity of time in South Africa, in 1892, a railway conference was held in Bloemfontein and discussed difficulty of working a railway system, in the absence of a uniform time system. The governments of the Orange Free State, Transvaal and the Cape Colony officially adopted a standard time of Greenwich Mean Time +01,30 which was defined as mean time 22. 5° east of Greenwich. On 1 March 1903 GMT+02,00 was adopted, which became the current UTC+02,00 when UTC replaced GMT for most purposes, prior to 1 March 1903, the Colony of Natal was already using a uniform time supplied by the Natal Observatory. The observatorys local mean time was GMT+1,57, South Africa observed a daylight saving time of GMT+3,00 between 20 September 1942 to 21 March 1943 and 19 September 1943 to 21 March 1944. South African Standard Time is defined as Coordinated Universal Time plus two hours
11.
Mauritius Time
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Mauritius Time, or MUT, is a time zone used by the Indian Ocean island nation of Mauritius. The zone is four hours ahead of UTC, daylight saving time was used in 2008. Clocks were put forward to UTC+5 on October 26,2008, the time change is no longer applied
12.
Daylight saving
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Daylight saving time is the practice of advancing clocks during summer months by one hour so that evening daylight lasts an hour longer, while sacrificing normal sunrise times. Typically, regions that use Daylight Savings Time adjust clocks forward one hour close to the start of spring, American inventor and politician Benjamin Franklin proposed a form of daylight time in 1784. New Zealander George Hudson proposed the idea of saving in 1895. The German Empire and Austria-Hungary organized the first nationwide implementation, starting on April 30,1916, many countries have used it at various times since then, particularly since the energy crisis of the 1970s. The practice has both advocates and critics, DST clock shifts sometimes complicate timekeeping and can disrupt travel, billing, record keeping, medical devices, heavy equipment, and sleep patterns. Computer software often adjusts clocks automatically, but policy changes by various jurisdictions of DST dates, industrialized societies generally follow a clock-based schedule for daily activities that do not change throughout the course of the year. The time of day that individuals begin and end work or school, North and south of the tropics daylight lasts longer in summer and shorter in winter, with the effect becoming greater as one moves away from the tropics. However, they will have one hour of daylight at the start of each day. Supporters have also argued that DST decreases energy consumption by reducing the need for lighting and heating, DST is also of little use for locations near the equator, because these regions see only a small variation in daylight in the course of the year. After ancient times, equal-length civil hours eventually supplanted unequal, so civil time no longer varies by season, unequal hours are still used in a few traditional settings, such as some monasteries of Mount Athos and all Jewish ceremonies. This 1784 satire proposed taxing window shutters, rationing candles, and waking the public by ringing church bells, despite common misconception, Franklin did not actually propose DST, 18th-century Europe did not even keep precise schedules. However, this changed as rail transport and communication networks came to require a standardization of time unknown in Franklins day. Modern DST was first proposed by the New Zealand entomologist George Hudson, whose shift work job gave him time to collect insects. An avid golfer, he also disliked cutting short his round at dusk and his solution was to advance the clock during the summer months, a proposal he published two years later. The proposal was taken up by the Liberal Member of Parliament Robert Pearce, a select committee was set up to examine the issue, but Pearces bill did not become law, and several other bills failed in the following years. Willett lobbied for the proposal in the UK until his death in 1915, william Sword Frost, mayor of Orillia, Ontario, introduced daylight saving time in the municipality during his tenure from 1911 to 1912. Starting on April 30,1916, the German Empire and its World War I ally Austria-Hungary were the first to use DST as a way to conserve coal during wartime, Britain, most of its allies, and many European neutrals soon followed suit. Russia and a few other countries waited until the year
13.
Cape Verde
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Located 570 kilometres off the coast of West Africa, the islands cover a combined area of slightly over 4,000 square kilometres. The Cape Verde archipelago was uninhabited until the 15th century, when Portuguese explorers discovered and colonized the islands, ideally located for the Atlantic slave trade, the islands grew prosperous throughout the 16th and 17th centuries, attracting merchants, privateers, and pirates. The end of slavery in the 19th century led to economic decline, Cape Verde gradually recovered as an important commercial center and stopover for shipping routes. Incorporated as a department of Portugal in 1951, the islands continued to agitate for independence. Since the early 1990s, Cape Verde has been a representative democracy. Lacking natural resources, its economy is mostly service-oriented, with a growing focus on tourism. Its population of around 512,000 is mostly of mixed European and sub-Saharan African heritage, a sizeable diaspora community exists across the world, slightly outnumbering inhabitants on the islands. Historically, the name Cape Verde has been used in English for the archipelago and, since independence in 1975, for the country. In 2013, the Cape Verdean government determined that the Portuguese designation Cabo Verde would henceforth be used for official purposes, such as at the United Nations, Cape Verde is a member of the African Union. The name of the stems from the nearby Cap-Vert, on the Senegalese coast. In 1444 Portuguese explorers had named that landmark as Cabo Verde, on 24 October 2013, the countrys delegation announced at the United Nations that the official name should no longer be translated into other languages. Instead of Cape Verde, the designation Republic of Cabo Verde is to be used, before the arrival of Europeans, the Cape Verde Islands were uninhabited. The islands of the Cape Verde archipelago were discovered by Genoese and Portuguese navigators around 1456, according to Portuguese official records, the first discoveries were made by Genoa-born António de Noli, who was afterwards appointed governor of Cape Verde by Portuguese King Afonso V. Other navigators mentioned as contributing to discoveries in the Cape Verde archipelago are Diogo Gomes, Diogo Dias, Diogo Afonso, in 1462, Portuguese settlers arrived at Santiago and founded a settlement they called Ribeira Grande. Ribeira Grande was the first permanent European settlement in the tropics, in the 16th century, the archipelago prospered from the Atlantic slave trade. Pirates occasionally attacked the Portuguese settlements, sir Francis Drake, an English corsair privateering under a letter of marque granted by the English crown, twice sacked the capital Ribeira Grande in 1585 when it was a part of the Iberian Union. After a French attack in 1712, the town declined in relative to nearby Praia. Decline in the trade in the 19th century resulted in an economic crisis
14.
Local mean time
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Local mean time is a form of solar time that corrects the variations of local apparent time, forming a uniform time scale at a specific longitude. This measurement of time was used for use during the 19th century before time zones were introduced beginning in the late 19th century, it still has some uses in astronomy. Local mean time was used from the early 19th century, when local solar time or sundial time was last used until standard time was adopted on various dates in the several countries, each town or city kept its own meridian. This led to a situation where locations one degree of longitude apart had times four minutes apart. This became a problem in the mid 19th century when railways needed clocks that were synchronized between stations, at the time as people needed to match their clock to the time tables. Standard time means that the time is used throughout some region—usually. The difference between local time and local apparent time is the equation of time
15.
Solar time
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Solar time is a calculation of the passage of time based on the position of the Sun in the sky. The fundamental unit of time is the day. Two types of time are apparent solar time and mean solar time. Fix a tall pole vertically in the ground, at some instant on any day the shadow will point exactly north or south. That instant is local apparent noon,12,00 local apparent time, about 24 hours later the shadow will again point north/south, the Sun seeming to have covered a 360-degree arc around the Earths axis. When the Sun has covered exactly 15 degrees, local apparent time is 13,00 exactly, after 15 more degrees it will be 14,00 exactly. As explained in the equation of time article, this is due to the eccentricity of the Earths orbit, the effect of this is that a clock running at a constant rate – e. g. This is mean solar time, which is not perfectly constant from one century to the next but is close enough for most purposes. Currently a mean solar day is about 86,400.002 SI seconds, the two kinds of solar time are among the three kinds of time reckoning that were employed by astronomers until the 1950s. By the 1950s it had become clear that the Earths rotation rate was not constant, so astronomers developed ephemeris time, the apparent sun is the true sun as seen by an observer on Earth. Apparent solar time or true solar time is based on the apparent motion of the actual Sun and it is based on the apparent solar day, the interval between two successive returns of the Sun to the local meridian. Solar time can be measured by a sundial. The equivalent on other planets is termed local true solar time, the length of a solar day varies through the year, and the accumulated effect produces seasonal deviations of up to 16 minutes from the mean. The effect has two main causes, first, Earths orbit is an ellipse, not a circle, so the Earth moves faster when it is nearest the Sun and slower when it is farthest from the Sun. Second, due to Earths axial tilt, the Suns annual motion is along a circle that is tilted to Earths celestial equator. In June and December when the sun is farthest from the equator a given shift along the ecliptic corresponds to a large shift at the equator. So apparent solar days are shorter in March and September than in June or December and these lengths will change slightly in a few years and significantly in thousands of years. Mean solar time is the angle of the mean Sun plus 12 hours
16.
Royal Observatory, Greenwich
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The Royal Observatory, Greenwich is an observatory situated on a hill in Greenwich Park, overlooking the River Thames. It played a role in the history of astronomy and navigation. The observatory was commissioned in 1675 by King Charles II, with the stone being laid on 10 August. The site was chosen by Sir Christopher Wren and he appointed John Flamsteed as the first Astronomer Royal. The building was completed in the summer of 1676, the building was often called Flamsteed House, in reference to its first occupant. The scientific work of the observatory was relocated elsewhere in stages in the first half of the 20th century,1675 –22 June, Royal Observatory founded. 1675 –10 August, construction began,1714 Longitude Act established the Board of Longitude and Longitude rewards. The Astronomer Royal was, until the Board was dissolved in 1828,1767 Astronomer Royal Nevil Maskelyne began publication of the Nautical Almanac, based on observations made at the Observatory. 1833 Daily time signals began, marked by dropping a Time ball,1899 The New Physical Observatory was completed. 1924 Hourly time signals from the Royal Observatory were first broadcast on 5 February,1948 Office of the Astronomer Royal was moved to Herstmonceux. 1957 Royal Observatory completed its move to Herstmonceux, becoming the Royal Greenwich Observatory, the Greenwich site is renamed the Old Royal Observatory. Greenwich site is returned to its name, the Royal Observatory. The Ordnance Office was given responsibility for building the Observatory, with Moore providing the key instruments, Moore donated two clocks, built by Thomas Tompion, which were installed in the 20 foot high Octagon Room, the principal room of the building. They were of unusual design, each with a pendulum 13 feet in length mounted above the face, giving a period of four seconds. British astronomers have used the Royal Observatory as a basis for measurement. Four separate meridians have passed through the buildings, defined by successive instruments, subsequently, nations across the world used it as their standard for mapping and timekeeping. When the Airy circle became the reference for the meridian, the difference resulting from the change was considered enough to be neglected. When a new triangulation was done between 1936 and 1962, scientists determined that in the Ordnance Survey system the longitude of the international Greenwich meridian was not 0° and this old astronomical prime meridian has been replaced by a more precise prime meridian
17.
Greenwich
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Greenwich is an early-established district of todays London, England, centred 5.5 miles east south-east of Charing Cross. The town lends its name to the Royal Borough of Greenwich, Greenwich is generally described as being part of South-east London and sometimes as being part of East London. Greenwich is notable for its history and for giving its name to the Greenwich Meridian. The town became the site of a palace, the Palace of Placentia from the 15th century. The palace fell into disrepair during the English Civil War and was rebuilt as the Royal Naval Hospital for Sailors by Sir Christopher Wren and his assistant Nicholas Hawksmoor. These buildings became the Royal Naval College in 1873, and they remained an establishment for military education until 1998 when they passed into the hands of the Greenwich Foundation. The historic rooms within these buildings remain open to the public, other buildings are used by University of Greenwich and Trinity Laban Conservatoire of Music and Dance. The town became a resort in the 18th century and many grand houses were built there, such as Vanbrugh Castle established on Maze Hill. From the Georgian period estates of houses were constructed above the town centre, Greenwich formed part of Kent until 1889 when the County of London was created. The place-name Greenwich is first attested in a Saxon charter of 918 and it is recorded as Grenewic in 964, and as Grenawic in the Anglo-Saxon Chronicle for 1013. It is Grenviz in the Domesday Book of 1086, and Grenewych in the Taxatio Ecclesiastica of 1291, the name means green wic or settlement. An article in The Times of 13 October 1967 stated, East Greenwich, gateway to the Blackwall Tunnel, remains solidly working class, the manpower for one eighth of Londons heavy industry. West Greenwich is a hybrid, the spirit of Nelson, the Cutty Sark, the Maritime Museum, an industrial waterfront and a number of elegant houses, ripe for development. Royal charters granted to English colonists in North America, often used the name of the manor of East Greenwich for describing the tenure as that of free socage, New England charters provided that the grantees should hold their lands as of his Majesty’s manor of East Greenwich. Grants named the castle of Windsor, places in North America that have taken the name East Greenwich include a township in Gloucester County, New Jersey, a hamlet in Washington County, New York, and a town in Kent County, Rhode Island. Tumuli to the south-west of Flamsteed House, in Greenwich Park, are thought to be early Bronze Age barrows re-used by the Saxons in the 6th century as burial grounds, to the east between the Vanbrugh and Maze Hill Gates is the site of a Roman villa or temple. A small area of red paving tesserae protected by railings marks the spot and it was excavated in 1902 and 300 coins were found dating from the emperors Claudius and Honorius to the 5th century. This was excavated by the Channel 4 television programme Time Team in 1999, broadcast in 2000, the Roman road from London to Dover, Watling Street crossed the high ground to the south of Greenwich, through Blackheath
18.
London
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London /ˈlʌndən/ is the capital and most populous city of England and the United Kingdom. Standing on the River Thames in the south east of the island of Great Britain and it was founded by the Romans, who named it Londinium. Londons ancient core, the City of London, largely retains its 1. 12-square-mile medieval boundaries. London is a global city in the arts, commerce, education, entertainment, fashion, finance, healthcare, media, professional services, research and development, tourism. It is crowned as the worlds largest financial centre and has the fifth- or sixth-largest metropolitan area GDP in the world, London is a world cultural capital. It is the worlds most-visited city as measured by international arrivals and has the worlds largest city airport system measured by passenger traffic, London is the worlds leading investment destination, hosting more international retailers and ultra high-net-worth individuals than any other city. Londons universities form the largest concentration of education institutes in Europe. In 2012, London became the first city to have hosted the modern Summer Olympic Games three times, London has a diverse range of people and cultures, and more than 300 languages are spoken in the region. Its estimated mid-2015 municipal population was 8,673,713, the largest of any city in the European Union, Londons urban area is the second most populous in the EU, after Paris, with 9,787,426 inhabitants at the 2011 census. The citys metropolitan area is the most populous in the EU with 13,879,757 inhabitants, the city-region therefore has a similar land area and population to that of the New York metropolitan area. London was the worlds most populous city from around 1831 to 1925, Other famous landmarks include Buckingham Palace, the London Eye, Piccadilly Circus, St Pauls Cathedral, Tower Bridge, Trafalgar Square, and The Shard. The London Underground is the oldest underground railway network in the world, the etymology of London is uncertain. It is an ancient name, found in sources from the 2nd century and it is recorded c.121 as Londinium, which points to Romano-British origin, and hand-written Roman tablets recovered in the city originating from AD 65/70-80 include the word Londinio. The earliest attempted explanation, now disregarded, is attributed to Geoffrey of Monmouth in Historia Regum Britanniae and this had it that the name originated from a supposed King Lud, who had allegedly taken over the city and named it Kaerlud. From 1898, it was accepted that the name was of Celtic origin and meant place belonging to a man called *Londinos. The ultimate difficulty lies in reconciling the Latin form Londinium with the modern Welsh Llundain, which should demand a form *lōndinion, from earlier *loundiniom. The possibility cannot be ruled out that the Welsh name was borrowed back in from English at a later date, and thus cannot be used as a basis from which to reconstruct the original name. Until 1889, the name London officially applied only to the City of London, two recent discoveries indicate probable very early settlements near the Thames in the London area
19.
Coordinated Universal Time
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Coordinated Universal Time, abbreviated to UTC, is the primary time standard by which the world regulates clocks and time. It is within about 1 second of mean time at 0° longitude. It is one of closely related successors to Greenwich Mean Time. For most purposes, UTC is considered interchangeable with GMT, the first Coordinated Universal Time was informally adopted on 1 January 1960. This change also adopted leap seconds to simplify future adjustments, a number of proposals have been made to replace UTC with a new system that would eliminate leap seconds, but no consensus has yet been reached. Leap seconds are inserted as necessary to keep UTC within 0.9 seconds of universal time, see the Current number of leap seconds section for the number of leap seconds inserted to date. The official abbreviation for Coordinated Universal Time is UTC and this abbreviation arose from a desire by the International Telecommunication Union and the International Astronomical Union to use the same abbreviation in all languages. English speakers originally proposed CUT, while French speakers proposed TUC, the compromise that emerged was UTC, which conforms to the pattern for the abbreviations of the variants of Universal Time. Time zones around the world are expressed using positive or negative offsets from UTC, the westernmost time zone uses UTC−12, being twelve hours behind UTC, the easternmost time zone, theoretically, uses UTC+12, being twelve hours ahead of UTC. In 1995, the nation of Kiribati moved those of its atolls in the Line Islands from UTC-10 to UTC+14 so that the country would all be on the same day. UTC is used in internet and World Wide Web standards. The Network Time Protocol, designed to synchronise the clocks of computers over the internet, computer servers, online services and other entities that rely on having a universally accepted time use UTC as it is more specific than GMT. If only limited precision is needed, clients can obtain the current UTC from a number of official internet UTC servers, for sub-microsecond precision, clients can obtain the time from satellite signals. UTC is also the standard used in aviation, e. g. for flight plans. Weather forecasts and maps all use UTC to avoid confusion about time zones, the International Space Station also uses UTC as a time standard. Amateur radio operators often schedule their radio contacts in UTC, because transmissions on some frequencies can be picked up by many time zones, UTC is also used in digital tachographs used on large goods vehicles under EU and AETR rules. UTC divides time into days, hours, minutes and seconds, days are conventionally identified using the Gregorian calendar, but Julian day numbers can also be used. Each day contains 24 hours and each hour contains 60 minutes, the number of seconds in a minute is usually 60, but with an occasional leap second, it may be 61 or 59 instead
20.
Universal Time
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Universal Time is a time standard based on Earths rotation. It is a continuation of Greenwich Mean Time, i. e. the mean solar time on the Prime Meridian at Greenwich, London. In fact, the expression Universal Time is ambiguous, as there are versions of it. All of these versions of UT, except for UTC, are based on Earths rotation relative to distant celestial objects, UTC is based on International Atomic Time, with leap seconds added to keep it within 0.9 second of UT1. Prior to the introduction of time, each municipality throughout the civilized world set its official clock, if it had one. Greenwich Mean Time, where all clocks in Britain were set to the time, was established to solve this problem. Chronometers or telegraphy were used to synchronize these clocks, Standard time, as originally proposed by Scottish-Canadian Sir Sandford Fleming in 1879, divided the world into twenty-four time zones, each one covering 15 degrees of longitude. All clocks within each zone would be set to the time as the others. This location was chosen because by 1884 two-thirds of all nautical charts, the conference did not adopt Flemings time zones because they were outside the purpose for which it was called, which was to choose a basis for universal time. During the period between 1848 and 1972, all of the countries adopted time zones based on the Greenwich meridian. The term Greenwich Mean Time persists, however, in usage to this day in reference to civil timekeeping. Based on the rotation of the Earth, time can be measured by observing celestial bodies crossing the meridian every day. Astronomers found that it was accurate to establish time by observing stars as they crossed a meridian rather than by observing the position of the Sun in the sky. Nowadays, UT in relation to International Atomic Time is determined by Very Long Baseline Interferometry observations of distant quasars, the rotation of the Earth and UT are monitored by the International Earth Rotation and Reference Systems Service. The International Astronomical Union also is involved in setting standards, the rotation of the Earth is somewhat irregular, and is very gradually slowing due to tidal acceleration. Furthermore, the length of the second was determined from observations of the Moon between 1750 and 1890. All of these cause the mean solar day, on the average, to be slightly longer than the nominal 86,400 SI seconds. As UT is slightly irregular in its rate, astronomers introduced Ephemeris Time, thus, civil broadcast standards for time and frequency usually follow International Atomic Time closely, but occasionally step in order to prevent them from drifting too far from mean solar time
21.
Orbit
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In physics, an orbit is the gravitationally curved path of an object around a point in space, for example the orbit of a planet about a star or a natural satellite around a planet. Normally, orbit refers to a regularly repeating path around a body, to a close approximation, planets and satellites follow elliptical orbits, with the central mass being orbited at a focal point of the ellipse, as described by Keplers laws of planetary motion. For ease of calculation, in most situations orbital motion is adequately approximated by Newtonian Mechanics, historically, the apparent motions of the planets were described by European and Arabic philosophers using the idea of celestial spheres. This model posited the existence of perfect moving spheres or rings to which the stars and it assumed the heavens were fixed apart from the motion of the spheres, and was developed without any understanding of gravity. After the planets motions were accurately measured, theoretical mechanisms such as deferent. Originally geocentric it was modified by Copernicus to place the sun at the centre to help simplify the model, the model was further challenged during the 16th century, as comets were observed traversing the spheres. The basis for the understanding of orbits was first formulated by Johannes Kepler whose results are summarised in his three laws of planetary motion. Second, he found that the speed of each planet is not constant, as had previously been thought. Third, Kepler found a relationship between the orbital properties of all the planets orbiting the Sun. For the planets, the cubes of their distances from the Sun are proportional to the squares of their orbital periods. Jupiter and Venus, for example, are respectively about 5.2 and 0.723 AU distant from the Sun, their orbital periods respectively about 11.86 and 0.615 years. The proportionality is seen by the fact that the ratio for Jupiter,5. 23/11.862, is equal to that for Venus,0. 7233/0.6152. Idealised orbits meeting these rules are known as Kepler orbits, isaac Newton demonstrated that Keplers laws were derivable from his theory of gravitation and that, in general, the orbits of bodies subject to gravity were conic sections. Newton showed that, for a pair of bodies, the sizes are in inverse proportion to their masses. Where one body is more massive than the other, it is a convenient approximation to take the center of mass as coinciding with the center of the more massive body. Lagrange developed a new approach to Newtonian mechanics emphasizing energy more than force, in a dramatic vindication of classical mechanics, in 1846 le Verrier was able to predict the position of Neptune based on unexplained perturbations in the orbit of Uranus. This led astronomers to recognize that Newtonian mechanics did not provide the highest accuracy in understanding orbits, in relativity theory, orbits follow geodesic trajectories which are usually approximated very well by the Newtonian predictions but the differences are measurable. Essentially all the evidence that can distinguish between the theories agrees with relativity theory to within experimental measurement accuracy
22.
Axial tilt
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In astronomy, axial tilt, also known as obliquity, is the angle between an objects rotational axis and its orbital axis, or, equivalently, the angle between its equatorial plane and orbital plane. At an obliquity of zero, the two axes point in the direction, i. e. the rotational axis is perpendicular to the orbital plane. Over the course of an orbit, the obliquity usually does not change considerably, and this causes one pole to be directed more toward the Sun on one side of the orbit, and the other pole on the other side — the cause of the seasons on the Earth. Earths obliquity oscillates between 22.1 and 24.5 degrees on a 41, 000-year cycle, the mean obliquity is currently 23°26′13. 4″. There are two methods of specifying tilt. The IAU also uses the rule to define a positive pole for the purpose of determining orientation. Using this convention, Venus is tilted 177° and it is denoted by the Greek letter ε. Earth currently has a tilt of about 23. 4°. This value remains about the relative to a stationary orbital plane throughout the cycles of axial precession. But the ecliptic due to planetary perturbations, and the obliquity of the ecliptic is not a fixed quantity. At present, it is decreasing at a rate of about 47″ per century, Earths obliquity may have been reasonably accurately measured as early as 1100 BC in India and China. The ancient Greeks had good measurements of the obliquity since about 350 BC, about 830 AD, the Caliph Al-Mamun of Baghdad directed his astronomers to measure the obliquity, and the result was used in the Arab world for many years. It was widely believed, during the Middle Ages, that both precession and Earths obliquity oscillated around a value, with a period of 672 years. Earths axis remains tilted in the direction with reference to the background stars throughout a year. This means that one pole will be directed away from the Sun at one side of the orbit and this is the cause of Earths seasons. Summer occurs in the Northern hemisphere when the pole is directed toward the Sun. Variations in Earths axial tilt can influence the seasons and is likely a factor in climate change. The exact angular value of the obliquity is found by observation of the motions of Earth, from 1984, the Jet Propulsion Laboratorys DE series of computer-generated ephemerides took over as the fundamental ephemeris of the Astronomical Almanac
23.
Sun
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The Sun is the star at the center of the Solar System. It is a perfect sphere of hot plasma, with internal convective motion that generates a magnetic field via a dynamo process. It is by far the most important source of energy for life on Earth. Its diameter is about 109 times that of Earth, and its mass is about 330,000 times that of Earth, accounting for about 99. 86% of the total mass of the Solar System. About three quarters of the Suns mass consists of hydrogen, the rest is mostly helium, with smaller quantities of heavier elements, including oxygen, carbon, neon. The Sun is a G-type main-sequence star based on its spectral class and it formed approximately 4.6 billion years ago from the gravitational collapse of matter within a region of a large molecular cloud. Most of this matter gathered in the center, whereas the rest flattened into a disk that became the Solar System. The central mass became so hot and dense that it eventually initiated nuclear fusion in its core and it is thought that almost all stars form by this process. The Sun is roughly middle-aged, it has not changed dramatically for more than four billion years and it is calculated that the Sun will become sufficiently large enough to engulf the current orbits of Mercury, Venus, and probably Earth. The enormous effect of the Sun on Earth has been recognized since prehistoric times, the synodic rotation of Earth and its orbit around the Sun are the basis of the solar calendar, which is the predominant calendar in use today. The English proper name Sun developed from Old English sunne and may be related to south, all Germanic terms for the Sun stem from Proto-Germanic *sunnōn. The English weekday name Sunday stems from Old English and is ultimately a result of a Germanic interpretation of Latin dies solis, the Latin name for the Sun, Sol, is not common in general English language use, the adjectival form is the related word solar. The term sol is used by planetary astronomers to refer to the duration of a solar day on another planet. A mean Earth solar day is approximately 24 hours, whereas a mean Martian sol is 24 hours,39 minutes, and 35.244 seconds. From at least the 4th Dynasty of Ancient Egypt, the Sun was worshipped as the god Ra, portrayed as a falcon-headed divinity surmounted by the solar disk, and surrounded by a serpent. In the New Empire period, the Sun became identified with the dung beetle, in the form of the Sun disc Aten, the Sun had a brief resurgence during the Amarna Period when it again became the preeminent, if not only, divinity for the Pharaoh Akhenaton. The Sun is viewed as a goddess in Germanic paganism, Sól/Sunna, in ancient Roman culture, Sunday was the day of the Sun god. It was adopted as the Sabbath day by Christians who did not have a Jewish background, the symbol of light was a pagan device adopted by Christians, and perhaps the most important one that did not come from Jewish traditions
24.
Prime meridian (Greenwich)
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A prime meridian, based at the Royal Observatory, Greenwich, in London, was established by Sir George Airy in 1851. By 1884, over two-thirds of all ships and tonnage used it as the meridian on their charts. In October of that year, at the behest of U. S. President Chester A. Arthur,41 delegates from 25 nations met in Washington, United States, for the International Meridian Conference. This conference selected the meridian passing through Greenwich as the prime meridian due to its popularity. However, France abstained from the vote, and French maps continued to use the Paris meridian for several decades, the prime meridian passes through the Airy transit circle of the Greenwich observatory. The actual reason for the discrepancy is that the strip is indeed at astronomical longitude zero degrees, zero minutes. Before the establishment of a meridian, most maritime countries established their own prime meridian. In 1721, Great Britain established its own meridian passing through a transit circle at the newly established Royal Observatory at Greenwich. The meridian was moved around 10 metres or so east on three occasions as transit circles with newer and better instruments were built, on each occasion next door to the existing one and this was to allow uninterrupted observation during each new construction. The final meridian was established as a line from the north pole to the south pole passing through the Airy transit circle. This became Great Britains meridian in 1851, for all practical purposes of the period, the changes as the meridian was moved went unnoticed. Transit instruments are installed to be perpendicular to the local level, in 1884, the International Meridian Conference took place to establish an internationally recognised single meridian. The meridian chosen was that which passed through the Airy transit circle at Greenwich, at around the time of this conference, scientists were making measurements to determine the deflection of the vertical on a large scale. The downward extended plumb lines dont even all intersect the axis of the Earth. To make computations feasible, scientists defined ellipsoids of revolution, a given ellipsoid would be a compromise for measurements in a given area. When the Airy transit circle was built, a basin was used to align the telescope to the perpendicular. While the local vertical defined at the Airy transit circle still points to the celestial meridian. As a result of this, the ITRF zero meridian, defined by a passing through the Earths rotation axis, is 102 metres to the east of the prime meridian
25.
Equation of time
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The equation of time describes the discrepancy between two kinds of solar time. The word equation is used in the sense of reconcile a difference. The two times that differ are the apparent solar time, which tracks the motion of the sun, and mean solar time. Apparent solar time can be obtained by measurement of the current position of the Sun, Mean solar time, for the same place, would be the time indicated by a steady clock set so that over the year its differences from apparent solar time would resolve to zero. The equation of time is the east or west component of the analemma, the equation of time values for each day of the year, compiled by astronomical observatories, were widely listed in almanacs and ephemerides. During a year the equation of time varies as shown on the graph, apparent time, and the sundial, can be ahead by as much as 16 min 33 s, or behind by as much as 14 min 6 s. The equation of time has zeros near 15 April,13 June,1 September and 25 December, ignoring very slow changes in the Earths orbit and rotation, these events are repeated at the same times every tropical year. However, due to the number of days in a year. The equation of time is constant only for a planet with zero axial tilt, on Mars the difference between sundial time and clock time can be as much as 50 minutes, due to the considerably greater eccentricity of its orbit. The planet Uranus, which has a large axial tilt, has an equation of time that makes its days start. There is no accepted definition of the sign of the equation of time. Some publications show it as positive when a sundial is ahead of a clock, as shown in the graph above, others when the clock is ahead of the sundial. In the English-speaking world, the usage is the more common. Anyone who makes use of a table or graph should first check its sign usage. Often, there is a note or caption which explains it, otherwise, the sign can be determined by knowing that, during the first three months of each year, the clock is ahead of the sundial. The mnemonic NYSS, for new year, sundial slow, can be useful, some published tables avoid the ambiguity by not using signs, but by showing phrases such as sundial fast or sundial slow instead. In this article, and others in English Wikipedia, a value of the equation of time implies that a sundial is ahead of a clock. The phrase equation of time is derived from the medieval Latin, the word aequātiō was widely used in early astronomy to tabulate the difference between an observed value and the expected value
26.
BBC World Service
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The BBC announced in November 2016 that It would start broadcasting in additional languages including Igbo, Nigerian Pidgin, Yoruba and Amharic, in its biggest expansion since the 1940s. In 2015 World Service reached an average of 210 million people a week, the English-language service broadcasts 24 hours a day. The World Service is funded by the United Kingdoms television licence fee, limited advertising, the service also gets £289 million each year from the UK government. The World Service was funded for decades by grant-in-aid through the Foreign, the Director of the BBC World Service Group is Francesca Unsworth. The controller of BBC World Service, English, is Mary Hockaday, the BBC World Service began in 1932 as the BBC Empire Service, broadcasting on shortwave and aimed principally at English speakers across the British Empire. In his first Christmas Message, King George V stated that the service was intended for men and women, so cut off by the snow, the desert, or the sea, first hopes for the Empire Service were low. The programmes will neither be very interesting nor very good and this address was read out five times as it was broadcast live to different parts of the world. On 3 January 1938, the first foreign-language service was launched in Arabic, programmes in German started on 29 March 1938, and by the end of 1942 broadcasts were being made in all major European languages. As a result, the Empire Service was renamed the BBC Overseas Service in November 1939, and these were financed not from the domestic licence fee but from government grant-in-aid, and known administratively as the External Services of the BBC. The External Services broadcast propaganda during the Second World War and its French service Radio Londres also sent coded messages to the French Resistance. George Orwell broadcast many news bulletins on the Eastern Service during World War II. By the end of the 1940s the number of broadcast languages had expanded and reception had improved, following the opening of a relay in modern-day Malaysia and of the Limassol relay, Cyprus, in 1957. In recent years, financial pressures have decreased the number and type of services offered by the BBC, in countries with wide access to Internet services, there is less need for a radio station. Broadcasts in German ended in March 1999, after research showed that the majority of German listeners tuned into the English service, broadcasts in Dutch, Finnish, French, Hebrew, Italian, Japanese and Malay were stopped for similar reasons. Additionally, Romanian broadcasts ceased on 1 August 2008, in January 2011 the closure of the Albanian, Macedonian, Portuguese for Africa, Serbian, and English for the Caribbean services was announced. The British government announced that the three Balkan countries had access to international information, and so broadcasts in the local languages had become unnecessary. 650 jobs went as part of the 16% budget cut and this led to allegations that these measures would encourage a pro-American bias within the Service and help America win the information war. The Service broadcasts from Broadcasting House in London, which is headquarters of the Corporation
27.
Royal Navy
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The Royal Navy is the United Kingdoms naval warfare force. Although warships were used by the English kings from the medieval period. The modern Royal Navy traces its origins to the early 16th century, from the middle decades of the 17th century and through the 18th century, the Royal Navy vied with the Dutch Navy and later with the French Navy for maritime supremacy. From the mid 18th century it was the worlds most powerful navy until surpassed by the United States Navy during the Second World War. The Royal Navy played a key part in establishing the British Empire as the world power during the 19th. Due to this historical prominence, it is common, even among non-Britons, following World War I, the Royal Navy was significantly reduced in size, although at the onset of the Second World War it was still the worlds largest. By the end of the war, however, the United States Navy had emerged as the worlds largest, during the Cold War, the Royal Navy transformed into a primarily anti-submarine force, hunting for Soviet submarines, mostly active in the GIUK gap. The Royal Navy is part of Her Majestys Naval Service, which includes the Royal Marines. The professional head of the Naval Service is the First Sea Lord, the Defence Council delegates management of the Naval Service to the Admiralty Board, chaired by the Secretary of State for Defence. The strength of the fleet of the Kingdom of England was an important element in the power in the 10th century. English naval power declined as a result of the Norman conquest. Medieval fleets, in England as elsewhere, were almost entirely composed of merchant ships enlisted into service in time of war. Englands naval organisation was haphazard and the mobilisation of fleets when war broke out was slow, early in the war French plans for an invasion of England failed when Edward III of England destroyed the French fleet in the Battle of Sluys in 1340. Major fighting was confined to French soil and Englands naval capabilities sufficed to transport armies and supplies safely to their continental destinations. Such raids halted finally only with the occupation of northern France by Henry V. Henry VII deserves a large share of credit in the establishment of a standing navy and he embarked on a program of building ships larger than heretofore. He also invested in dockyards, and commissioned the oldest surviving dry dock in 1495 at Portsmouth, a standing Navy Royal, with its own secretariat, dockyards and a permanent core of purpose-built warships, emerged during the reign of Henry VIII. Under Elizabeth I England became involved in a war with Spain, the new regimes introduction of Navigation Acts, providing that all merchant shipping to and from England or her colonies should be carried out by English ships, led to war with the Dutch Republic. In the early stages of this First Anglo-Dutch War, the superiority of the large, heavily armed English ships was offset by superior Dutch tactical organisation and the fighting was inconclusive
28.
Met Office
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The Met Office is the United Kingdoms national weather service. It is an agency and trading fund of the Department for Business, Energy and Industrial Strategy led by CEO, Rob Varley and chief scientist. The Met Office makes meteorological predictions across all timescales from weather forecasts to climate change, the Met Office was established in 1854 as a small department within the Board of Trade under Vice-Admiral Robert FitzRoy as a service to mariners. The loss of the vessel, the Royal Charter, and 459 lives off the coast of Anglesey in a violent storm in October 1859 led to the first gale warning service. FitzRoy established a network of 15 coastal stations from which visual gale warnings could be provided for ships at sea, the new electric telegraph enabled rapid dissemination of warnings and also led to the development of an observational network which could then be used to provide synoptic analysis. The Met Office started in 1861 to provide forecasts to newspapers. Publication of forecasts ceased in May 1866 after FitzRoy’s death but recommenced in April 1879, in 1936 the Met Office split with services to the Royal Navy being provided by its own forecasting services. It became an agency of the Ministry of Defence in April 1990. It has a worldwide presence – including a centre in Aberdeen. Royal Navy weather forecasts are provided by naval officers, not Met Office personnel. The Shipping Forecast is produced by the Met Office and broadcast on BBC Radio 4, the Met Office issues Severe Weather Warnings for the United Kingdom through the National Severe Weather Warning Service. These warn of events that may affect transport infrastructure and endanger peoples lives. In March 2008, the system was improved and a new stage of warning was introduced, on 10 November, the first named storm was Abigail. The principal weather products for UK customers are 36-hour forecasts from the operational 1, the Met Offices Global Model forecast has consistently been in the top 3 for global weather forecast performance in independent verification to WMO standards. Products for other regions of the globe are sold to customers abroad, if necessary, forecasters may make adjustments to the computer forecasts. Data is stored in the Met Offices own PP-format, formed in 2009, the Flood Forecasting Centre is a joint venture between the Environment Agency and the Met Office to provide flood risk guidance for England and Wales. The Centre is jointly staffed from both parent organisations and is based in the Operations Centre at the Met Office headquarters in Exeter, in Scotland this role is performed by the Scottish Flood Forecasting Service, a joint venture between the Scottish Environment Protection Agency and the Met Office. The Met Office makes seasonal forecasts and distributes them to customers and users globally, Met Office research has broken new ground in seasonal forecasting for the extratropics and has demonstrated its abilities in its seasonal predictions of the North Atlantic Oscillation
29.
Middle East Broadcasting Centre
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The Middle East Broadcasting Center Group is the first private free-to-air satellite broadcasting company in the Arab World. It was launched in London in 1991 and later moved to its headquarters in Dubai in 2002, MBC Group provides multiple channels of information, interaction and entertainment. The Group also includes two stations, MBC FM, and Panorama FM, as well as O3 productions. MBC is a free-to-air, pan-Arab, news and entertainment broadcaster and it was launched in 1991 as the first privately owned and independent Arabic satellite TV station. MBC was the first broadcaster to provide a satellite-based free-to-air 24-hour television network across the Arab world and it has remained privately owned, managed by a group of businessmen and shareholders, including chairman and CEO Sheikh Waleed Bin Ibrahim Al Brahim. The shareholder list has never been verified, over the past 25 years, MBC has grown into a multi-channel platform. At its launch, MBC offered entertainment programmes that were popular in the Middle East as well as top-rating shows from Western markets, in particular the United States. The MBC News at 9, 00pm became regularly viewed in the Arabic-speaking world, MBCs television arm, MBC TV, broadcasts via Arabsat and Nilesat satellites, and delivers news and entertainment to more than 150 million Arabic speakers around the world. MBC Headquarters is located in Dubai Media City, the company has more than 1,800 staff members worldwide. The first station in the group, MBC1 offers offer both Arabic entertainment and news content, MBC News at 9 pm provides coverage of domestic and international news. MBC has become regions first broadcaster to provide free to air HD channels by launching the HD versions of MBC1, MBC DRAMA, MBC4, MBC2, MBC MAX, MBC ACTION, all of MBC channel are free-to-air channels except for the HD channels and MBC Plus Variety. They are available on OSN, STCs Invision IPTV and my-HD satellite service and they are all Pay-TV service providers in the Middle East. Launched in 1991 as the first independent Pan Arab channel, MBC1 is the first free-to-air private satellite channel, today, hosting the news service in the region and with a commitment to local programming- from soap operas to hit reality TV shows. The first free-to-air movie channel in the Arab world, MBC2 offers a 24-hour non-stop stream of Hollywood movies, from blockbusters to classics, long kisses on the lips and any sexual related acts are cut from the films. A children’s entertainment channel which delivers a mix of childrens education. MBC3 also airs a locally produced reality show for kids, Eish Safari, recently, the channel produced a new game show called Graduate In A Day, similar in concept to Who Wants To Be A Millionaire for children and their parents. Today, the channel is geared towards MBC own production, based on international formats, the channel has aired the biggest production for the Group, Arabs Got Talent, in addition to various other shows, some MBC produced, others co-produced or through acquisitions. MBC launched MBC Bollywood on 26 October 2013, the day as the season three premiere of Arabs Got Talent
30.
OSN
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Orbit Showtime Network is a direct-broadcast satellite provider serving the Middle East and North Africa. It offers popular entertainment content such as movies, sporting events and various TV shows from major networks, paramount, HBO, Fox, Disney, Sony, MGM, Universal, ESPN and DreamWorks in addition to local versions specifically for the MENA region. As of 2015 OSN offers 154 television channels and 53 high-definition channels, OSN was formed as a result of merger of two of the Mideasts largest TV networks, Orbit and Showtime Arabia in 2009. The OSN network is owned and operated by Panther Media Group Limited, oSNs corporate headquarters and Broadcast Center are based in Dubai Media City in the United Arab Emirates. OSN introduced several technologies and services in the Middle East market, in 2012 the OSN DVR HD was launched. OSN Play, an online TV platform, Plus HD, a 3D, HD, internet-enabled satellite receiver and recorder and OSN on Demand, the regions first VOD service were all launched in the same year. Showtime Arabia, was launched in 1996 as a joint venture between KIPCO and CBS Corporation and six years after its launch became the number one satellite television platform in MENA. Showtime Arabia continued its growth in the region by adding a range of new channels, in 2008, Showtime Arabia also introduced a video on-demand service, broadcasting full seasons of premier U. S. series and top Hollywood movies. OSN provides 150 channels including 65 HD channels and two on-demand channels, OSN News OSN Sports OSN Movies Orbit Showtime Network opening string of UAE retail outlets. Official website Company profile at Zawya Flysat OSN Package Turner switch off on OSN
31.
Commonwealth of Nations
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The Commonwealth of Nations, also known as simply the Commonwealth, is an intergovernmental organisation of 52 member states that are mostly former territories of the British Empire. The Commonwealth dates back to the century with the decolonisation of the British Empire through increased self-governance of its territories. It was formally constituted by the London Declaration in 1949, which established the states as free. The symbol of free association is Queen Elizabeth II who is the Head of the Commonwealth. The Queen is also the monarch of 16 members of the Commonwealth, the other Commonwealth members have different heads of state,31 members are republics and five are monarchies with a different monarch. Member states have no obligation to one another. Instead, they are united by language, history, culture and their values of democracy, free speech, human rights. These values are enshrined in the Commonwealth Charter and promoted by the quadrennial Commonwealth Games, the Commonwealth covers more than 29,958,050 km2, 20% of the worlds land area, and spans all six inhabited continents. She declared, So, it marks the beginning of that free association of independent states which is now known as the Commonwealth of Nations. As long ago as 1884, however, Lord Rosebery, while visiting Australia, had described the changing British Empire—as some of its colonies became more independent—as a Commonwealth of Nations. Conferences of British and colonial prime ministers occurred periodically from the first one in 1887, the Commonwealth developed from the imperial conferences. Newfoundland never did, as on 16 February 1934, with the consent of its parliament, Newfoundland later joined Canada as its 10th province in 1949. Australia and New Zealand ratified the Statute in 1942 and 1947 respectively, after World War II ended, the British Empire was gradually dismantled. Most of its components have become independent countries, whether Commonwealth realms or republics, there remain the 14 British overseas territories still held by the United Kingdom. In April 1949, following the London Declaration, the word British was dropped from the title of the Commonwealth to reflect its changing nature, burma and Aden are the only states that were British colonies at the time of the war not to have joined the Commonwealth upon independence. Hoped for success was reinforced by such achievements as climbing Mount Everest in 1953, breaking the four minute mile in 1954, however, the humiliation of the Suez Crisis of 1956 badly hurt morale of Britain and the Commonwealth as a whole. More broadly, there was the loss of a role of the British Empire. That role was no longer militarily or financially feasible, as Britains withdrawal from Greece in 1947 painfully demonstrated, Britain itself was now just one part of the NATO military alliance in which the Commonwealth had no role apart from Canada
32.
History of longitude
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The history of longitude is a record of the effort, by astronomers, cartographers and navigators over several centuries, to discover a means of determining longitude. The measurement of longitude is important to both cartography and navigation, in particular to provide safe ocean navigation, knowledge of both latitude and longitude was required. Finding an accurate and reliable method of determining longitude took centuries of study, eratosthenes in the 3rd century BC first proposed a system of latitude and longitude for a map of the world. By the 2nd century BC Hipparchus was the first to use such a system to uniquely specify places on the earth and he also proposed a system of determining longitude by comparing the local time of a place with an absolute time. This is the first recognition that longitude can be determined by knowledge of time. In the 11th century Al-Biruni believed the earth rotated on its axis and this forms our modern notion of how time and longitude are related. Determining latitude was relatively easy in that it could be found from the altitude of the sun at noon with the aid of a table giving the suns declination for the day, for longitude, early ocean navigators had to rely on dead reckoning. This was inaccurate on long voyages out of sight of land, determining longitude at sea was also much harder than on land. Whatever could be discovered from solving the problem at sea would improve the determination of longitude on land. In order to avoid problems with not knowing ones position accurately, navigators have and they would sail to the latitude of their destination, turn toward their destination and follow a line of constant latitude. This was known as running down a westing and this prevented a ship from taking the most direct route or a route with the most favourable winds and currents, extending the voyage by days or even weeks. This increased the likelihood of short rations, which could lead to health or even death for members of the crew due to scurvy or starvation. Errors in navigation have also resulted in shipwrecks. for such person or persons as shall discover the Longitude, the prizes were to be awarded for the discovery and demonstration of a practical method for determining the longitude of a ship at sea. Prizes were offered in graduated amounts for solutions of increasing accuracy and these prizes, worth the equivalent of millions of pounds in todays currency, motivated many to search for a solution. Britain was not alone in the desire to solve the problem, frances King Louis XIV founded the Académie Royale des Sciences in 1666. It was charged with, among a range of scientific activities, advancement of the science of navigation. From 1715, the Académie offered one of the two Prix Rouillés specifically for navigation, spains Philip II offered a prize for the discovery of a solution to the problem of the longitude in 1567, Philip III increased the prize in 1598. Holland added to the effort with a prize offered in 1636, navigators and scientists in most European countries were aware of the problem and were involved in finding a solution
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Shepherd Gate Clock
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The Shepherd Gate Clock is mounted on the wall outside the gate of the Royal Greenwich Observatory building in Greenwich, Greater London. The clock, an example of an electric clock, was a slave mechanism controlled by electric pulses transmitted by a master clock inside the main building. The network of master and slave clocks was constructed and installed by Charles Shepherd in 1852, the clock by the gate was probably the first to display Greenwich Mean Time to the public, and is unusual in using the 24-hour analogue dial. The original idea for the network came from the Astronomer Royal. With the arrival of the network, a single time standard was needed to replace the various incompatible local times then in use across the country. Airy proposed that standard time would be provided by the Royal Observatory. His idea was to use what he called galvanism or electric signalling to transmit time pulses from Greenwich to slave clocks throughout the country, and perhaps to Europe and the colonies too. In 1849, Charles Shepherd Junior, an engineer and son of a clockmaker, patented a system for controlling a network of master, Shepherd installed the public clocks for the Great Exhibition which opened in May 1851. In October 1851, Airy wrote to Charles Shepherd asking for proposals and estimates, including a request for the following clocks, One automatic clock. One clock with large dial to be seen by the Public, near the Observatory entrance, Airy also wanted the existing Greenwich time ball to be electrically operated, so that its descent at 13,00 was synchronised with the master clock inside the observatory. By August 1852, Shepherd had built and installed the network of clocks, costs were considerably higher than the original estimates. Shepherd had estimated £40 for the clock and time ball apparatus. The total costs included £70 for the clock, and £75 for the wall clock by the gate. Shepherd would be appointed to oversee the construction of a network for the Indian Government in 1853. A pulse was sent to the time ball at 13,00. The signals were also transmitted along cables from Greenwich to London Bridge, at London Bridge, a time signal was distributed at less frequent intervals to clocks and receivers throughout England. It sends galvanic signals every day all the principal railways diverging from London. It drops the Greenwich Ball and the Ball on the Offices of the Eastern Telegraph Company in the Strand, by 1866, time signals were being sent to Harvard University via transatlantic cable
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Marine chronometer
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A marine chronometer is a timepiece that is precise and accurate enough to be used as a portable time standard, it can therefore be used to determine longitude by means of celestial navigation. Timepieces made in Switzerland may display the word chronometer only if certified by the COSC, to determine a position on the Earths surface, it is necessary and sufficient to know the latitude, longitude, and altitude. Altitude considerations can, of course, be ignored for vessels operating at sea level, until the mid-1750s, accurate navigation at sea out of sight of land was an unsolved problem due to the difficulty in calculating longitude. Navigators could determine their latitude by measuring the angle at noon or, in the Northern Hemisphere. To find their longitude, however, they needed a standard that would work aboard a ship. Observation of regular celestial motions, such as Galileos method based on observing Jupiters natural satellites, was not possible at sea due to the ships motion. The lunar distances method, initially proposed by Johannes Werner in 1514, was developed in parallel with the marine chronometer, the Dutch scientist Gemma Frisius was the first to propose the use of a chronometer to determine longitude in 1530. The purpose of a chronometer is to measure accurately the time of a fixed location. This is particularly important for navigation, knowing GMT at local noon allows a navigator to use the time difference between the ships position and the Greenwich Meridian to determine the ships longitude. The creation of a timepiece which would work reliably at sea was difficult, christiaan Huygens, following his invention of the pendulum clock in 1656, made the first attempt at a marine chronometer in 1673 in France, under the sponsorship of Jean-Baptiste Colbert. He obtained a patent for his invention from Colbert, but his clock remained imprecise at sea, the first published use of the term was in 1684 in Arcanum Navarchicum, a theoretical work by Kiel professor Matthias Wasmuth. This was followed by a theoretical description of a chronometer in works published by English scientist William Derham in 1713. Attempts to construct a marine chronometer were begun by Jeremy Thacker in England in 1714. In 1714, the British government offered a prize for a method of determining longitude at sea. His first two sea timepieces H1 and H2 used this system, but he realised that they had a sensitivity to centrifugal force. However, H3s circular balances still proved too inaccurate and he abandoned the large machines. Harrison solved the problems with his much smaller H4 chronometer design in 1761. H4 looked much like a large five-inch diameter pocket watch, in 1761, Harrison submitted H4 for the £20,000 longitude prize
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Prime meridian
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A prime meridian is a meridian in a geographical coordinate system at which longitude is defined to be 0°. Together, a meridian and its antimeridian form a great circle. This great circle divides the sphere, e. g. the Earth, if one uses directions of East and West from a defined prime meridian, then they can be called Eastern Hemisphere and Western Hemisphere. The most widely used modern meridian is the IERS Reference Meridian and it is derived but deviates slightly from the Greenwich Meridian, which was selected as an international standard in 1884. The notion of longitude was developed by the Greek Eratosthenes in Alexandria, and Hipparchus in Rhodes, but it was Ptolemy who first used a consistent meridian for a world map in his Geographia. The main point is to be comfortably west of the tip of Africa as negative numbers were not yet in use. His prime meridian corresponds to 18°40 west of Winchester today, at that time the chief method of determining longitude was by using the reported times of lunar eclipses in different countries. Ptolemys Geographia was first printed with maps at Bologna in 1477, but there was still a hope that a natural basis for a prime meridian existed. The Tordesillas line was settled at 370 leagues west of Cape Verde. This is shown in Diogo Ribeiros 1529 map, in 1541, Mercator produced his famous 41 cm terrestrial globe and drew his prime meridian precisely through Fuertaventura in the Canaries. His later maps used the Azores, following the magnetic hypothesis, but by the time that Ortelius produced the first modern atlas in 1570, other islands such as Cape Verde were coming into use. In his atlas longitudes were counted from 0° to 360°, not 180°W to 180°E as is usual today and this practice was followed by navigators well into the 18th century. In 1634, Cardinal Richelieu used the westernmost island of the Canaries, Ferro, 19°55 west of Paris, the geographer Delisle decided to round this off to 20°, so that it simply became the meridian of Paris disguised. In the early 18th century the battle was on to improve the determination of longitude at sea, between 1765 and 1811, Nevil Maskelyne published 49 issues of the Nautical Almanac based on the meridian of the Royal Observatory, Greenwich. Maskelynes tables not only made the lunar method practicable, they made the Greenwich meridian the universal reference point. In 1884, at the International Meridian Conference in Washington, D. C.22 countries voted to adopt the Greenwich meridian as the meridian of the world. The French argued for a line, mentioning the Azores and the Bering Strait. In October 1884 the Greenwich Meridian was selected by delegates to the International Meridian Conference held in Washington, united States to be the common zero of longitude and standard of time reckoning throughout the world
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International Meridian Conference
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The International Meridian Conference was a conference held in October 1884 in Washington, D. C. in the United States, to determine a prime meridian for international use. The conference was held at the request of U. S. President Chester A. Arthur, the subject to discuss was the choice of a meridian to be employed as a common zero of longitude and standard of time reckoning throughout the world. It resulted in selection of the Greenwich Meridian as the standard for zero degrees longitude. By the 1870s there was both to establish a prime meridian for worldwide navigation purposes and to unify local times for railway timetables. In Britain, the Great Western Railway had standardised time by 1840, the Post Office was by this time transmitting time signals from Greenwich by telegraph to most parts of the country to set the clocks. In the United States, the problems were more severe. This envisaged clocks showing 24-hour universal time with an extra dial having a local time rounded to the nearest hour and he also pointed out that many of the corrections for local mean time were greater than those involved in abandoning solar time. In 1878/9, he produced modified proposals using the Greenwich meridian, flemings two papers were considered so important that in June 1879 the British Government forwarded copies to eighteen foreign countries and to various scientific bodies in England. At the same time the American Metrological Society produced a Report on Standard Time by Cleveland Abbe, the Naval Observatory had also foiled the onward transmission of the Greenwich time signal from Harvard, where it was received via transatlantic cable and used to time a signal ball in Boston. The Seventh International Geodesic Conference in Rome in October 1883 then thrashed out most of the technical details and that from this meridian longitude shall be counted in two directions up to 180 degrees, east longitude being plus and west longitude minus. That the Conference expresses the hope that as soon as may be practicable the astronomical and nautical days will be arranged everywhere to begin at midnight, resolution 2, fixing the meridian at Greenwich, was passed 22–1, France and Brazil abstained. The French did not adopt the Greenwich meridian until 1911, resolution 4 expressly exempts standard time from the universal day. Thus the conference did not adopt any time zones, contrary to popular belief, regarding resolution 6, Great Britain had already shifted the beginning of the nautical day from noon, twelve hours before midnight, to midnight in 1805, during the Battle of Trafalgar. The astronomical day was shifted from noon, twelve hours after midnight, the following resolutions were not adopted, On 13 Oct, Resolved, That the initial meridian should have a character of absolute neutrality. It should be chosen exclusively so as to secure to science and to international commerce all possible advantages, - Twenty-one noes and three ayes. - France, Brazil, San Domingo voted in favor, in the end, the pragmatic argument for continuity with most nautical charts won the day and the French delegation abstained in the vote. There was discussion of setting zones as small as 10 minutes, most European countries aligned their clocks with Greenwich within ten years, Sweden and North America already having done so, and the trend continued. Greenwich Time and the discovery of the longitude, Proceedings of the 1884 International Meridian Conference - notes with links to scanned page images at Steve Allens site Fleming, Sandford
