Vikram Samvat. It uses solar sidereal years; the Vikram Samvat is notable because many medieval era inscriptions use it. It is said to be named after the legendary king Vikramaditya, but the term "Vikrama Samvat" does not appear in the historical records before the 9th century, rather the same calendaring system is found by other names such as Krita and Malava. In the colonial era scholarship, the era was believed to be based on the commemoration of King Vikramaditya expelling the Sakas from Ujjain; however epigraphical evidence and scholarship suggest that this theory has no historical basis and likely was an error. Starting in the 9th century and thereafter, epigraphical artwork uses Vikrama-Samvat, suggesting that sometime around the 9th-century, the Hindu calendar era, in use became popular as Vikram Samvat, while Buddhist and Jain epigraphy continued to use an era based on the Buddha or the Mahavira. According to popular tradition, the legendary king Vikramaditya of Ujjain established the Vikrama Samvat era after defeating the Śakas.
Kalakacharya Kathanaka by the Jain sage Mahesarasuri gives the following account: Gandharvasena, the then-powerful king of Ujjain, abducted a nun called Sarasvati, the sister of the monk. The enraged monk sought the help of the Śaka ruler King Sahi in Sistan. Despite heavy odds but aided by miracles, the Śaka king defeated Gandharvasena and made him a captive. Sarasvati was repatriated; the defeated king retired to the forest. His son, being brought up in the forest, had to rule from Pratishthana. On, Vikramaditya invaded Ujjain and drove away from the Śakas. To commemorate this event, he started a new era called the "Vikrama era"; the Ujjain calendar started around 58–56 BCE, the subsequent Shaka era calendar was started in 78 CE at Pratishthana. The association of the era beginning in 57 BCE with Vikramaditya is not found in any source before the 9th century CE; the earlier sources call this era by various names, including Kṛṭa, the era of the Malava tribe, or Samvat. The earliest known inscription that calls the era "Vikrama" is from 842 CE.
This inscription of Chauhana ruler Chandamahasena was found at Dholpur, is dated Vikrama Samvat 898, Vaishakha Shukla 2, Chanda. The earliest known inscription that associates this era with a king called Vikramaditya is dated 971 CE; the earliest literary work that connects the era to Vikramaditya is Subhashita-Ratna-Sandoha by the Jain author Amitagati. For this reason, multiple authors believe that the Vikram Samvat was not started by Vikramaditya, who might be a purely legendary king or the title adopted by a king who renamed the era after himself. V. A. Smith and D. R. Bhandarkar believed that Chandragupta II adopted the title Vikramaditya, changed the name of the era to "Vikrama Samvat". According to Rudolf Hoernlé, the king responsible for this change was Yashodharman: Hoernlé believed that he conquered Kashmir, is the same person as the "Harsha Vikramaditya" mentioned in Kalhana's Rajatarangini. Earlier, some scholars believed that the Vikrama Samavat corresponded to the Azes era of the Indo-Scythian king King Azes.
However, this was disputed by Robert Bracey following the discovery of an inscription of Vijayamitra, dated in two eras. The theory seems to be now discredited by Falk and Bennett, who place the inception of the Azes era in 47–46 BCE; the traditional New Year of Vikram Samvat is one of the many festivals of Nepal, marked by parties, family gatherings, the exchange of good wishes, participation in rituals to ensure good fortune in the coming year. It occurs in mid-April each year, coincides with the traditional new year in Assam, Burma, Kerala, Manipur, Punjab, Sri Lanka, Tamil Nadu and Thailand. In addition to Nepal, the Vikram Samvat calendar is recognized in North and East India, in Gujarat among Hindus. Hindu religious festivals are based on a Luni-Solar calendar, not Solar calendar, based on Vikram Samvat. In North India, the new year in Vikram Samvat starts from the first day of Chaitra Skukla paksha. In Buddhist communities, the month of Baishakh is associated with Buddha's Birthday, it commemorates the birth and passing of Gautama Buddha on the first full moon day in May, except in a leap year when the festival is held in June.
Although this festival is not held on the same day as Pahela Baishakh, the holidays fall in the same month of the Bengali and Theravada Buddhist calendars, are related through the spread of Hinduism and Buddhism in the Indian subcontinent. In Gujarat, the day after Diwali is celebrated as the first day of the Vikram Samvat calendar, the first day of the month Kartik; the Vikrami era is an ancient calendar and has been used by Hindus and Sikhs. It is one of the several regional Hindu calendars that have been in use on the Indian subcontinent, it is based on twelve synodical lunar months and 365 solar days; the lunar new year starts on the new moon in the month of Chaitra. This day, known as Chaitra Sukhladi, is a restricted holiday in India; the Vikrami Samvat has been in use in the Indian subcontinent since ancient times, remains in use by the Hindus in north, w
Elizabeth I of England
Elizabeth I was Queen of England and Ireland from 17 November 1558 until her death on 24 March 1603. Sometimes called The Virgin Queen, Gloriana or Good Queen Bess, Elizabeth was the last of the five monarchs of the House of Tudor. Elizabeth was the daughter of Henry VIII and Anne Boleyn, his second wife, executed two-and-a-half years after Elizabeth's birth. Anne's marriage to Henry VIII was annulled, Elizabeth was declared illegitimate, her half-brother, Edward VI, ruled until his death in 1553, bequeathing the crown to Lady Jane Grey and ignoring the claims of his two half-sisters and the Roman Catholic Mary, in spite of statute law to the contrary. Edward's will was set aside and Mary became queen, deposing Lady Jane Grey. During Mary's reign, Elizabeth was imprisoned for nearly a year on suspicion of supporting Protestant rebels. In 1558 upon Mary's death, Elizabeth succeeded her half-sister to the throne and set out to rule by good counsel, she depended on a group of trusted advisers, led by William Cecil, 1st Baron Burghley.
One of her first actions as queen was the establishment of an English Protestant church, of which she became the Supreme Governor. This Elizabethan Religious Settlement was to evolve into the Church of England, it was expected that Elizabeth would produce an heir. She was succeeded by her first cousin twice removed, James VI of Scotland, she had earlier been responsible for the imprisonment and execution of James's mother, Queen of Scots. In government, Elizabeth was more moderate. One of her mottoes was "video et taceo". In religion, she was tolerant and avoided systematic persecution. After the pope declared her illegitimate in 1570 and released her subjects from obedience to her, several conspiracies threatened her life, all of which were defeated with the help of her ministers' secret service. Elizabeth was cautious in foreign affairs, manoeuvring between the major powers of Spain, she only half-heartedly supported a number of ineffective, poorly resourced military campaigns in the Netherlands and Ireland.
By the mid-1580s, England could no longer avoid war with Spain. England's defeat of the Spanish Armada in 1588 associated Elizabeth with one of the greatest military victories in English history; as she grew older, Elizabeth became celebrated for her virginity. A cult grew around her, celebrated in the portraits and literature of the day. Elizabeth's reign became known as the Elizabethan era; the period is famous for the flourishing of English drama, led by playwrights such as William Shakespeare and Christopher Marlowe, for the seafaring prowess of English adventurers such as Francis Drake. Some historians depict Elizabeth as a short-tempered, sometimes indecisive ruler, who enjoyed more than her share of luck. Towards the end of her reign, a series of economic and military problems weakened her popularity. Elizabeth is acknowledged as a charismatic performer and a dogged survivor in an era when government was ramshackle and limited, when monarchs in neighbouring countries faced internal problems that jeopardised their thrones.
After the short reigns of her half-siblings, her 44 years on the throne provided welcome stability for the kingdom and helped forge a sense of national identity. Elizabeth was born at Greenwich Palace and was named after her grandmothers, Elizabeth of York and Elizabeth Howard, she was the second child of Henry VIII of England born in wedlock to survive infancy. Her mother was Anne Boleyn. At birth, Elizabeth was the heir presumptive to the throne of England, her older half-sister, had lost her position as a legitimate heir when Henry annulled his marriage to Mary's mother, Catherine of Aragon, to marry Anne, with the intent to sire a male heir and ensure the Tudor succession. She was baptised on 10 September 1533. A canopy was carried at the ceremony over the three-day old child by her uncle Viscount Rochford, Lord Hussey, Lord Thomas Howard, Lord Howard of Effingham. Elizabeth was two years and eight months old when her mother was beheaded on 19 May 1536, four months after Catherine of Aragon's death from natural causes.
Elizabeth was deprived of her place in the royal succession. Eleven days after Anne Boleyn's execution, Henry married Jane Seymour, who died shortly after the birth of their son, Edward, in 1537. From his birth, Edward was undisputed heir apparent to the throne. Elizabeth was placed in his household and carried the chrisom, or baptismal cloth, at his christening. Elizabeth's first governess, Margaret Bryan, wrote that she was "as toward a child and as gentle of conditions as I knew any in my life". Catherine Champernowne, better known by her married name of Catherine "Kat" Ashley, was appointed as Elizabeth's governess in 1537, she remained Elizabeth's friend until her death in 1565. Champernowne taught Elizabeth four languages: French, Flemish and Spanish. By the time William Grindal became her tutor in 1544, Elizabeth could write English and Italian. Under Grindal, a talented and skilful tutor, she progressed in French and Greek. After Grindal died in 1548, Elizabeth received her education under Roger Ascham, a sympathetic teacher who believed that learning should be engaging.
By the time her formal education ended in 1550, Elizabeth was one of the best educated women of her generation. At the end of her life, Elizabeth was believed to speak Welsh, Cornish and Irish in addition to the languages men
The 15th century was the century which spans the Julian years 1401 to 1500. In Europe, the 15th century is seen as the bridge between the Late Middle Ages, the Early Renaissance, the Early modern period. Many technological and cultural developments of the 15th century can in retrospect be seen as heralding the "European miracle" of the following centuries. In religious history, the Roman Papacy was split in two parts in Europe for decades, until the Council of Constance; the division of the Catholic Church and the unrest associated with the Hussite movement would become factors in the rise of the Protestant Reformation in the following century. Constantinople, in what is today Turkey the capital of the Christian Byzantine Empire, falls to the emerging Muslim Ottoman Turks, marking the end of the tremendously influential Byzantine Empire and, for some historians, the end of the Middle Ages; the event forced Western Europeans to find a new trade route, adding further momentum to what was the beginning of the Age of Discovery, which would lead to the global mapping of the world.
Explorations by the Portuguese and Spanish led to European sightings of the Americas and the sea passage along Cape of Good Hope to India, in the last decade of the century. These expeditions ushered in the era of the Portuguese and Spanish colonial empires; the fall of Constantinople led to the migration of Greek scholars and texts to Italy, while Johannes Gutenberg's invention of the mechanical movable type began the Printing Press. These two events played key roles in the development of the Renaissance; the Spanish Reconquista leads to the final fall of the Emirate of Granada by the end of the century, ending over seven centuries of Muslim rule and returning Spain back to Christian rulers. The Hundred Years' War end with a decisive French victory over the English in the Battle of Castillon. Financial troubles in England following the conflict results in the Wars of the Roses, a series of dynastic wars for the throne of England; the conflicts end with the defeat of Richard III by Henry VII at the Battle of Bosworth Field, establishing the Tudor dynasty in the part of the century.
In Asia, under the rule of the Yongle Emperor, who built the Forbidden City and commanded Zheng He to explore the world overseas, the Ming Dynasty's territory reached its pinnacle. Tamerlane established a major empire in the Middle East and Central Asia, in order to revive the Mongol Empire. In Africa, the spread of Islam leads to the destruction of the Christian kingdoms of Nubia, by the end of the century leaving only Alodia; the vast Mali Empire teeters on the brink of collapse, under pressure from the rising Songhai Empire. In the Americas, both the Inca Empire and the Aztec Empire reach the peak of their influence. 1400s 1401: Dilawar Khan establishes the Malwa Sultanate in present-day central India 1402: Ottoman and Timurid Empires fight at the Battle of Ankara resulting in Timur's capture of Bayezid I. 1402: Sultanate of Malacca founded by Parameshwara. 1403: The Yongle Emperor moves the capital of China from Nanjing to Beijing. 1403: The settlement of the Canary Islands signals the beginning of the Spanish Empire.
1405–1433: Zheng He of China sails through the Indian Ocean to India and East Africa to spread China's influence and sovereignty. 1405: Paregreg war, Majapahit civil war of succession between Wikramawardhana against Wirabhumi. 1405–1407: The first voyage of Zheng He, a massive Ming dynasty naval expedition visited Java, Malacca, Aru and Lambri. 1410s 1410: The Battle of Grunwald is the decisive battle of the Polish–Lithuanian–Teutonic War leading to the downfall of the Teutonic Knights. 1410–1413: Foundation of St Andrews University in Scotland. 1414: Khizr Khan, deputised by Timur to be the governor of Multan, takes over Delhi founding the Sayyid dynasty. 1415: Henry the Navigator leads the conquest of Ceuta from the Moors marking the beginning of the Portuguese Empire. 1415: Battle of Agincourt fought between the Kingdom of England and France. 1415: Jan Hus is burned at the stake as a heretic at the Council of Constance.1420s 1420: Construction of the Chinese Forbidden City is completed in Beijing.
1420–1434: Hussite Wars in Bohemia. 1424: James I returns to Scotland after being held hostage under three Kings of England since 1406. 1424: Deva Raya II succeeds his father Veera Vijaya Bukka Raya as monarch of the Vijayanagara Empire. 1425: Catholic University of Leuven founded by Pope Martin V. 1429: Joan of Arc ends the Siege of Orléans and turns the tide of the Hundred Years' War. 1429: Queen Suhita succeeds Wikramawardhana as ruler of Majapahit.1430s 1431 January 9 – Pretrial investigations for Joan of Arc begin in Rouen, France under English occupation. March 3 – Pope Eugene IV succeeds Pope Martin V, to become the 207th pope. March 26 – The trial of Joan of Arc begins. May 30 – Nineteen-year-old Joan of Arc is burned at the stake. June 16 – the Teutonic Knights and Švitrigaila sign the Treaty of Christmemel, creating anti-Polish alliance September – Battle of Inverlochy: Donald Balloch defeats the Royalists. October 30 – Treaty of Medina del Campo, consolidating peace between Portugal and Castille.
December 16 – Henry VI of England is crowned King of France. 1438: Pachacuti founds the Inca Empire.1440s 1440: Eton College founded by Henry VI. 1440s: The Golden Horde breaks up into the Siberia Khanate, the Khanate of Kazan, the Astrakhan Khanate, the Crimean Khanate, the Great Horde. 1440–1469: Under Moctezuma I, the Aztecs become the dominant power in Mesoamerica. 1440: Oba Ewuare comes to power in the West African city of Benin, turns it into an empire. 1441: Jan van Eyck, Flemish painter, dies. 1441: Portuguese navigators cruise West
The 1570s decade ran from January 1, 1570, to December 31, 1579. January 9 – Ivan the Terrible begins the Massacre of Novgorod. January 23 – The assassination of Scottish regent James Stewart, 1st Earl of Moray, by James Hamilton, throws Scotland into civil war. February 8 – A magnitude 8.3 earthquake occurs in Concepción, Chile. February 15 – Venus occults Jupiter. February 25 – Pope Pius V excommunicates Queen Elizabeth I of England, with the bull Regnans in Excelsis. May 20 – Abraham Ortelius publishes the first modern atlas, Theatrum Orbis Terrarum, in Antwerp. June 10 – The Kingdom of Livonia is established. July 3 – The Ottoman conquest of Cyprus begins. July 14 – Pope Pius V issues Quo primum, promulgating the 1570 edition of the Roman Missal. July 30 – Battle of Anegawa: The allied forces of Oda Nobunaga and Tokugawa Ieyasu defeat the combined forces of the Azai and Asakura clans. August 8 – The Peace of Saint-Germain ends the Third War of Religion in France. Again, the Huguenots are promised political autonomy.
September 10 – A party of ten Spanish Jesuit missionaries land on the Virginia Peninsula of North America to establish the Ajacán Mission, which will be massacred in February 1571. Spanish conquistador Juan de Salcedo begins the conquest of the Kingdom of Maynila. Construction of the original Catedral Nuestra Señora de La Asunción, the oldest church in Venezuela, begins; the Whitechapel Bell Foundry is known to be in existence in London. By 2017, when it closes its premises in Whitechapel, it will be the oldest manufacturing company in Great Britain. Andrea Palladio publishes. Volcanic eruption in the Santorini caldera begins; the Andean population of the Viceroyalty of Peru reaches 1.3 million. January 11 – The Austrian nobility are granted freedom of religion. January 23 – The Royal Exchange opens in London, England. C. February 4–9 – The Spanish Jesuit missionaries of the Ajacán Mission, established on the Virginia Peninsula of North America in 1570, are massacred by local Native Americans. March 18 – The Order of the Knights of Saint John transfers the capital of Malta, from Birgu to Valletta.
May 24 – Moscow is burnt by the Crimean army, under Devlet I Giray. June 3 – Following the conquest of the Kingdom of Maynila, Spanish Conquistador Miguel López de Legazpi makes Manila a city, the capital of the Philippines. June 25 – Queen Elizabeth's Grammar School, Horncastle, is founded in Lincolnshire, England. June 27 – Jesus College is established "within the City and University of Oxford of Queen Elizabeth's foundation" in England, by Welsh cleric and lawyer Hugh Price. July 25 – St Olave's Grammar School is founded in Tooley Street, London. August 1 – The Ottoman conquest of Cyprus is concluded, by the surrender of Famagusta. Cyprus is established as an eyalet of the Ottoman Empire, the first Turkish colony moves into the island. August 29 – Liliw, Philippines is founded by Gat Tayaw and residents as a municipality of Laguna. September 28 – The House of Commons of England introduces the first pro forma bill, symbolizing its authority over its own affairs. October 7 – Battle of Lepanto: Spanish and Papal naval forces, under Don John of Austria, defeat the Turkish fleet of Ali Monizindade Pasha.
Using mercury in the silver extraction process increases the output of the Potosí mine. The Swedish Church Ordinance 1571 creates the first complete order of the Protestant Swedish church; the church ordinance includes a chapter about schooling, in which all children in the cities, regardless of sex, are to be given elementary schooling. January 16 – Thomas Howard, 4th Duke of Norfolk, is tried for treason, for his part in the Ridolfi plot to restore Catholicism in England, he is executed on June 2. February – Harrow School is founded, with a royal charter from Queen Elizabeth I of England. February 13 – Elizabeth I of England issues a proclamation which revokes all commissions, on account of the frauds which they had fostered. April 1 – Capture of Brielle: The Sea Beggars, Netherlandish Calvinist rebels, capture the port city of Brielle; this leads to a wave of uprisings in Holland and Zealand against Spanish Habsburg rule, leaving most of those provinces under rebel control. May 13 – Pope Gregory XIII succeeds Pope Pius V, as the 226th pope.
June 25 – The Sea Beggars capture the city of Gorkum. July 9 – The Sea Beggars hang 19 imprisoned Roman Catholic priests at Brielle. July 11 – Humphrey Gilbert leads 1,500 volunteers from England, on an expedition to assist the Sea Beggars. July 19 – Wanli Emperor of China ascends the throne at the age of nine. July 29–August 2 – Battle of Molodi: A large Crimean Tatar–Ottoman army which invaded Russia is routed. August 18 – Huguenot King Henry III of Navarre marries Margaret of Valois, sister of King Charles and daughter of Catherine de' Medici, in a supposed attempt to reconcile Protestants and Catholics in France. August 24 – St. Bartholomew's Day massacre: Catholics in Paris murder thousands of Protestants, including Gaspard de Coligny and Petrus Ramus, at the order of King Charles IX, with Catherine de Medici's connivance. Henry of Navarre and the Prince of Condé escape the same fate; this brings about the Fourth War of Religion in France. October 20 – Eighty Years' War – Relief of Goes: Soldiers of the Spanish Tercios wade across the estuary of the Scheldt, to relieve the siege of Goes i
The Hebrew or Jewish calendar is a lunisolar calendar used today predominantly for Jewish religious observances. It determines the dates for Jewish holidays and the appropriate public reading of Torah portions and daily Psalm readings, among many ceremonial uses. In Israel, it is used for religious purposes, provides a time frame for agriculture and is an official calendar for civil purposes, although the latter usage has been declining in favor of the Gregorian calendar; the present Hebrew calendar is the product including a Babylonian influence. Until the Tannaitic period, the calendar employed a new crescent moon, with an additional month added every two or three years to correct for the difference between twelve lunar months and the solar year; the year in which it was added was based on observation of natural agriculture-related events in ancient Israel. Through the Amoraic period and into the Geonic period, this system was displaced by the mathematical rules used today; the principles and rules were codified by Maimonides in the Mishneh Torah in the 12th century.
Maimonides' work replaced counting "years since the destruction of the Temple" with the modern creation-era Anno Mundi. The Hebrew lunar year is about eleven days shorter than the solar year and uses the 19-year Metonic cycle to bring it into line with the solar year, with the addition of an intercalary month every two or three years, for a total of seven times per 19 years. With this intercalation, the average Hebrew calendar year is longer by about 6 minutes and 40 seconds than the current mean tropical year, so that every 217 years the Hebrew calendar will fall a day behind the current mean tropical year; the era used. As with Anno Domini, the words or abbreviation for Anno Mundi for the era should properly precede the date rather than follow it. AM 5779 began at sunset on 9 September 2018 and will end at sunset on 29 September 2019; the Jewish day is of no fixed length. The Jewish day is modeled on the reference to "...there was evening and there was morning..." in the creation account in the first chapter of Genesis.
Based on the classic rabbinic interpretation of this text, a day in the rabbinic Hebrew calendar runs from sunset to the next sunset. Halachically, a day ends and a new one starts when three stars are visible in the sky; the time between true sunset and the time when the three stars are visible is known as'bein hashmashot', there are differences of opinion as to which day it falls into for some uses. This may be relevant, for example, in determining the date of birth of a child born during that gap. There is no clock in the Jewish scheme. Though the civil clock, including the one in use in Israel, incorporates local adoptions of various conventions such as time zones, standard times and daylight saving, these have no place in the Jewish scheme; the civil clock is used only as a reference point – in expressions such as: "Shabbat starts at...". The steady progression of sunset around the world and seasonal changes results in gradual civil time changes from one day to the next based on observable astronomical phenomena and not on man-made laws and conventions.
In Judaism, an hour is defined as 1/12 of the time from sunrise to sunset, so, during the winter, an hour can be much less than 60 minutes, during the summer, it can be much more than 60 minutes. This proportional hour is known as a sha'ah z'manit. A Jewish hour is divided into parts. A part is 1/18 minute; the ultimate ancestor of the helek was a small Babylonian time period called a barleycorn, itself equal to 1/72 of a Babylonian time degree. These measures are not used for everyday purposes. Instead of the international date line convention, there are varying opinions as to where the day changes. One opinion uses the antimeridian of Jerusalem. Other opinions exist as well; the weekdays proceed to Saturday, Shabbat. Since some calculations use division, a remainder of 0 signifies Saturday. While calculations of days and years are based on fixed hours equal to 1/24 of a day, the beginning of each halachic day is based on the local time of sunset; the end of the Shabbat and other Jewish holidays is based on nightfall which occurs some amount of time 42 to 72 minutes, after sunset.
According to Maimonides, nightfall occurs. By the 17th century, this had become three-second-magnitude stars; the modern definition is when the center of the sun is 7° below the geometric horizon, somewhat than civil twilight at 6°. The beginning of the daytime portion of each day is determined both by sunrise. Most halachic times are based on some combination of these four times and vary from day to day throughout the year and vary depending on location; the daytime hours are divided into Sha'oth Zemaniyoth or "Halachic hours" by taking the time between sunrise and sunset or between dawn and nightfall and dividing it into 12 equal hours. The nighttime hours are s
Indian national calendar
The Indian national calendar, sometimes called the Shalivahana Shaka calendar. It is used, alongside the Gregorian calendar, by The Gazette of India, in news broadcasts by All India Radio and in calendars and communications issued by the Government of India; the Saka calendar is used in Java and Bali among Indonesian Hindus. Nyepi, the "Day of Silence", is a celebration of the Saka new year in Bali. Nepal's Nepal Sambat evolved from the Saka calendar. Prior to colonization, the Philippines used to apply the Saka calendar as well as suggested by the Laguna Copperplate Inscription; the term may ambiguously refer to the Hindu calendar. The historic Shalivahana era calendar is still used, it has years. The calendar months follow the signs of the tropical zodiac rather than the sidereal zodiac used with the Hindu calendar. Chaitra has 30 days and starts on March 22, except in leap years, when it has 31 days and starts on March 21; the months in the first half of the year all have 31 days, to take into account the slower movement of the sun across the ecliptic at this time.
The names of the months are derived from older, Hindu lunisolar calendars, so variations in spelling exist, there is a possible source of confusion as to what calendar a date belongs to. Years are counted in the Saka era. To determine leap years, add 78 to the Saka year – if the result is a leap year in the Gregorian calendar the Saka year is a leap year as well, its structure is just like the Persian calendar. Senior Indian Astrophysicist Meghnad Saha was the head of the Calendar Reform Committee under the aegis of the Council of Scientific and Industrial Research. Other members of the Committee were: A. C. Banerjee, K. K. Daftari, J. S. Karandikar, Gorakh Prasad, R. V. Vaidya and N. C. Lahiri, it was Saha's effort. The task before the Committee was to prepare an accurate calendar based on scientific study, which could be adopted uniformly throughout India, it was a mammoth task. The Committee had to undertake a detailed study of different calendars prevalent in different parts of the country. There were thirty different calendars.
The task was further complicated by the fact that religion and local sentiments were integral to those calendars. India's first prime minister, Jawaharlal Nehru, in his preface to the Report of the Committee, published in 1955, wrote: “They represent past political divisions in the country.... Now that we have attained Independence, it is desirable that there should be a certain uniformity in the calendar for our civic and other purposes, this should be done on a scientific approach to this problem.” Usage started at 1 Chaitra 1879, Saka Era, or 22 March 1957. Report of the Calendar Reform Committee – online link. Mapping Time: The Calendar and its History by E. G. Richards, 1998, pp. 184–185. Calendars and their History Indian Calendars Positional astronomy in India Indian National Calendar abstract
The Byzantine calendar called "Creation Era of Constantinople" or "Era of the World", was the calendar used by the Eastern Orthodox Church from c. 691 to 1728 in the Ecumenical Patriarchate. It was the official calendar of the Byzantine Empire from 988 to 1453, of Kievan Rus' and Russia from c. 988 to 1700. Since "Byzantine" is a historiographical term, the original name uses the noun "Roman" as it was how the Eastern Roman Empire continued calling itself; the calendar was based on the Julian calendar, except that the year started on 1 September and the year number used an Anno Mundi epoch derived from the Septuagint version of the Bible. It placed the date of creation at 5509 years before the Incarnation, was characterized by a certain tendency, a tradition among Jews and early Christians to number the years from the calculated foundation of the world, its Year One, marking the supposed date of creation, was September 1, 5509 BC, to August 31, 5508 BC. It is not known when; the first appearance of the term is in the treatise of a certain "monk and priest", who mentions all the main variants of the "World Era" in his work.
Georgios argues that the main advantage of the World era is the common starting point of the astronomical lunar and solar cycles, of the cycle of indictions, the usual dating system in Byzantium since the 6th century. He already regards it as the most convenient for the Easter computus. Complex calculations of the 19-year lunar and 28-year solar cycles within this world era allowed scholars to discover the cosmic significance of certain historical dates, such as the birth or the crucifixion of Jesus; this date underwent minor revisions before being finalized in the mid-7th century, although its precursors were developed c. AD 412. By the second half of the 7th century, the Creation Era was known in Western Europe, at least in Great Britain. By the late 10th century around AD 988, when the era appears in use on official government records, a unified system was recognized across the Eastern Roman world; the era was calculated as starting on September 1, Jesus was thought to have been born in the year 5509 since the creation of the world.
Historical time was thus calculated from the creation, not from Christ's birth, as in the west after the Anno Domini system was adopted between 6th and 9th centuries. The Eastern Church avoided the use of the Anno Domini system of Dionysius Exiguus, since the date of Christ's birth was debated in Constantinople as late as the 14th century. Otherwise the Byzantine calendar was identical to the Julian Calendar except that: the names of the months were transcribed from Latin into Greek; the leap day of the Byzantine calendar was obtained in an identical manner to the bissextile day of the original Roman version of the Julian calendar, by doubling the sixth day before the calends of March, i.e. by doubling 24 February. The Byzantine World Era was replaced in the Orthodox Church by the Christian Era, utilized by Patriarch Theophanes I Karykes in 1597, afterwards by Patriarch Cyril Lucaris in 1626, formally established by the Church in 1728. Meanwhile, as Russia received Orthodox Christianity from Byzantium, she inherited the Orthodox Calendar based on the Byzantine Era.
After the collapse of the Byzantine Empire in 1453, the era continued to be used by Russia, which witnessed millennialist movements in Moscow in AD 1492. It was only in AD 1700 that the Byzantine World Era in Russia was changed to the Julian Calendar by Peter the Great, it still forms the basis of traditional Orthodox calendars up to today. September AD 2000 began the year 7509 AM; the earliest extant Christian writings on the age of the world according to the Biblical chronology are by Theophilus, the sixth bishop of Antioch from the Apostles, in his apologetic work To Autolycus, by Julius Africanus in his Five Books of Chronology. Both of these early Christian writers, following the Septuagint version of the Old Testament, determined the age of the world to have been about 5,530 years at the birth of Christ. Ben Zion Wacholder points out that the writings of the Church Fathers on this subject are of vital significance, in that through the Christian chronographers a window to the earlier Hellenistic biblical chronographers is preserved: An immense intellectual effort was expended during the Hellenistic period by both Jews and pagans to date creation, the flood, building of the Temple...
In the course of their studies, men such as Tatian of Antioch, Clement of Alexandria, Hippolytus of Rome