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
Japanese calendar types have included a range of official and unofficial systems. At present, Japan uses the Gregorian calendar together with year designations stating the year of the reign of the current Emperor; the lunisolar Chinese calendar was introduced to Japan via Korea in the middle of the sixth century. After that, Japan calculated its calendar using various Chinese calendar procedures, from 1685, using Japanese variations of the Chinese procedures, but in 1873, as part of Japan's Meiji period modernization, a calendar based on the solar Gregorian calendar was introduced. In Japan today, the old Chinese calendar is ignored. Japan has had more than one system for designating years. Including: The Chinese sexagenary cycle was introduced early into Japan, it was used together with era names, as in the 1729 Ise calendar shown above, for "the 14th year of Kyōhō, tsuchi-no-to no tori", i.e. 己酉. Now, the cycle is used except around New Year; the era name system was introduced from China, has been in continuous use since AD 701.
Since the Taishō Emperor's ascension in 1912, each emperor's reign has begun a new era. Nengō are the official means of dating years in Japan, all government business is conducted using that system, it is in general use in private and personal business. The Japanese imperial year is based on the date of the legendary founding of Japan by Emperor Jimmu in 660 BC, it was first used in the official calendar in 1873. However, it never replaced era names, since World War II has been abandoned; the Western Common Era system has come into common use since the Meiji period. Now, most people know it, as well as era names; the official dating system known as nengō, has been in use since the late 7th century. Years are numbered within eras. Beginning with Meiji, each reign has been one era, but many earlier Emperors decreed a new era upon any major event; the nengō system remains in wide use on official documents and government forms. The imperial year system was used from 1872 to the Second World War. Imperial year 1 was the year when the legendary Emperor Jimmu founded Japan – 660 BC according to the Gregorian Calendar.
Usage of kōki dating can be a nationalist signal, pointing out that the history of Japan's imperial family is longer than that of Christianity, the basis of the Anno Domini system. Kōki 2600 was a special year; the 1940 Summer Olympics and Tokyo Expo were planned as anniversary events, but were canceled due to the Second Sino-Japanese War. The Japanese naval Zero Fighter was named after this year. After the Second World War, the United States occupied Japan, stopped the use of kōki by officials. Today, kōki is used, except in some judicial contexts; the 1898 law determining the placement of leap years is based on the kōki years, using a formula, equivalent to that of the Gregorian calendar: if the kōki year number is evenly divisible by four, it is a leap year, unless the number minus 660 is evenly divisible by 100 and not by 400. Thus, for example, the year Kōki 2560 is divisible by 4; the Japanese government has announced a new period of year on 2019 April Reiwa. The Heisei Period will end on 2019 April 30 and so the new period of year is expected to start on first of May 2019.
See "Seasonal days", below. The modern Japanese names for the months translate to "first month", "second month", so on; the corresponding number is combined with the suffix 月. The table below uses traditional numerals. In addition, every month has a traditional name, still used by some in fields such as poetry; the opening paragraph of a letter or the greeting in a speech might borrow one of these names to convey a sense of the season. Some, such as Yayoi and Satsuki, do double duty as given names; these month names appear from time to time on jidaigeki, contemporary television shows and movies set in the Edo period or earlier. The old Japanese calendar was an adjusted lunar calendar based on the Chinese calendar, the year—and with it the months—started anywhere from about 3 to 7 weeks than the modern year, so in historical contexts it is not accurate to equate the first month with January. Japan uses a seven-day week, aligned with the Western calendar; the seven-day week, with names for the days corresponding to the Latin system, was brought to Japan around AD 800 with the Buddhist calendar.
The system was used for astrological purposes and little else until 1876. The names of the days come from the five visible planets, which in turn are named after the five Chinese elements, from the moon and sun. On the origin of the names of the days of the week see East Asian Seven Luminaries. Sunday and Saturday are regarded as "Western style take-a-rest days". Since the late 19th century, Sunday has been regarded as a "full-time holiday", Saturday a half-time holiday; these holidays have no religious meaning. Many Japanese retailers
1430s in art
The decade of the 1430s in art involved some significant events. 1430: Considered end of Medieval art art period. 1430: First use of optical methods in the creation of art. 1430s: The engraver known as the Master of the Playing Cards becomes active in south-western Germany and Switzerland. 1435: Leon Battista Alberti writes Della Pittura. 1438-1440: Donatello completes his series of sculptures for the Cathedral of Prato. 1425–1430: Masolino da Panicale – The Annunciation c.1430: Domenico di Bartolo – Madonna and Child Enthroned with Saint Peter and Saint Paul c.1430–1432 Fra Angelico – The Annunciation Stefano di Giovanni – Madonna of the Snows Altarpiece c.1430–1440: Jan van Eyck – Crucifixion and Last Judgement diptych 1432: Jan van Eyck Ghent Altarpiece Léal Souvenir 1432–1434: Fra Angelico – Annunciation of Cortona completed in Florence 1433: Domenico di Bartolo – Madonna of Humility Rogier van der Weyden – Virgin and Child Enthroned Jan van Eyck – Portrait of a Man 1434: Jan van Eyck – Arnolfini portrait c.1434: Stefano di Giovanni Madonna of Humility with Saints San Domenico da Cortona Polyptych c.1434–1436: Jan van Eyck – The Annunciation c.1434–1446: Workshop of Rogier van der Weyden – The Annunciation 1435–1438: Rogier van der Weyden – The Magdalen Reading c.1435–1440: Rogier van der Weyden – Saint Luke Drawing the Virgin 1435: Stefano di Giovanni – The Journey of the Magi c.1435 Jan van Eyck – Madonna of Chancellor Rolin Konrad Witz – Heilspiegel Altarpiece and St. Christopher 1436 Paolo Uccello – Funerary Monument to Sir John Hawkwood Jan van Eyck – The Madonna with Canon van der Paele 1437: Domenico di Bartolo – Virgin and Child c.1437 Stefano di Giovanni – Polyptych of St. Anthony the Abbot Jan van Eyck – Lucca Madonna c.1437-1438: Fra Angelico – Perugia Altarpiece c.1437-1444: Stefano di Giovanni Ecstasy of Saint Francis Saint Francis Receiving Stigmata c.1437-1446: Fra Angelico – The Annunciation 1438: Domenico di Bartolo – Polyptych of Santa Giuliana c.1438-1440: Jan van Eyck – Madonna in the Church 1439: Jan van Eyck – Portrait of Margareta van Eyck c.1425–1466: Donatello – David c.1435: Lorenzo Ghiberti – Gates of Paradise 1430: Michel Colombe – French sculptor 1430: Jean Colombe – French miniature painter and illuminator of manuscripts 1430: Desiderio da Settignano – Italian sculptor 1430: Vincenzo Foppa – Italian painter 1430: Matteo di Giovanni – Italian Renaissance artist from the Sienese School 1430: Francesco Laurana – Dalmatian-born sculptor and medallist 1430: Pier Antonio Mezzastris – Italian painter of the Umbrian school of painting 1430: Fra Diamante – Italian fresco painter 1430: Carlo Crivelli – Italian Renaissance painter of conservative Late Gothic decorative sensibility 1430: Antonello da Messina – Sicilian painter 1430: Hans Memling – Early Netherlandish painter 1430: Giovanni Bellini – Italian painter 1430: Simone Papa the Elder – Italian painter 1430: Cosimo Tura – Italian painter and one of the founders of the School of Ferrara 1430: Di Biagio Baldassarre del Firenze – Italian Renaissance painter of the Florentine School 1431: Shingei – Japanese painter and artist of the Muromachi period 1431: Andrea Mantegna – Italian Renaissance artist 1433: Felice Feliciano - Italian calligrapher, composer of alchemical sonnets and expert on Roman antiquity 1433: Marco Zoppo - Italian painter active in Bologna 1434: Kanō Masanobu – Japanese chief painter of the Ashikaga shogunate and founder of the Kanō school of painting 1434: Tosa Mitsunobu – Japanese painter and founder of the Tosa school of painting 1434: Michael Wolgemut – German painter and printmaker 1435: Andrea del Verrocchio – influential Italian sculptor and painter working at the court of Lorenzo de' Medici in Florence 1435: Pietro Lombardo – Italian sculptor and architect 1435: Michael Pacher – Austrian Tyrolean painter and sculptor 1435: Andrea della Robbia – Italian sculptor in ceramics 1435: Bartolomeo Sanvito – Paduan calligrapher 1435: Nicolas Froment – French painter 1435: Bernt Notke – German painter and sculptor 1435: Giovanni Santi – Italian painter and father of Raphael 1435: Jan Polack – Polish-born German painter 1435/1440: Bertoldo di Giovanni – Italian sculptor 1436: Baccio Baldini – Italian engraver in Florence 1436: Benvenuto di Giovanni – Italian artist, manuscripts 1436: Sheikh Hamdullah – Ottoman master of Islamic calligraphy 1436: Ni Duan – Imperial Chinese painter of people and landscapes 1437: Simone Ferrucci – Italian sculptor 1438: Melozzo da Forlì – Italian fresco painter and member of the Forlì painting school 1439: Cosimo Rosselli – Italian painter of the Quattrocento, active in Florence 1439: Domenico Rosselli – Italian sculptor 1439: Francesco di Giorgio –
1430s in architecture
Tangermünde Rathaus built. 1431 – Collegiate Church of St Peter & St Paul, Surrey, rebuilt. 1436: August 30 – Brunelleschi's Dome at Florence Cathedral dedicated. 1439 – Strasbourg Cathedral completed. C. 1430 – Luca Fancelli born in Settignano, near Florence c. 1433 – Fra Giovanni Giocondo born in Verona 1439 – Francesco di Giorgio born in Siena c. 1439 – Richard Winchcombe, English master mason
Eikyō was a Japanese era name after Shōchō and before Kakitsu. This period spanned the years from September 1429 through February 1441; the reigning emperor was Go-Hanazono-tennō. 1429 Eikyō gannen: The era name was changed to mark the beginning of the reign of Emperor Go-Hanazono. The previous era ended and a new era commenced in Shōchō 1, on the 29th day of the 7th month, when the new emperor was proclaimed. April 14, 1429: Ashikaga Yoshinobu is honored in court. 1429: Yoshinori appointed shōgun. 1430: Southern army surrenders. 1432: Akamatsu Mitsusuke flees. 1433: The Emperor of China addressed a letter to shōgun Yoshinori in which, as a conventional aspect of the foreign relations of Imperial China, the Chinese assume that the head of the Ashikaga shogunate is the "king of Japan". 1433: Ōtomo rebels. 1434: Tosenbugyo established to regulate foreign affairs. 1436: Yasaka Pagoda at Hokanji in Kyoto destroyed by fire. 1438: Kantō Kanrei Ashikaga Mochiuji rebels against Muromachi shogunate known as Eikyō Rebellion.
1439: Mochiuji is defeated, he commits suicide. 1440: Yasaka Pagoda at Hokanji in Kyoto re-constructed by Yoshinori. 1441: Yoshinori grants Shimazu suzerainty over Ryukyu Islands. Nussbaum, Louis Frédéric and Käthe Roth.. Japan Encyclopedia. Cambridge: Harvard University Press. ISBN 978-0-674-01753-5. Nihon Ōdai Ichiran. Paris: Royal Asiatic Society, Oriental Translation Fund of Great Britain and Ireland. OCLC 5850691 National Diet Library, "The Japanese Calendar" -- historical overview plus illustrative images from library's collection
The Ethiopian calendar or Eritrean calendar is the principal calendar used in Ethiopia and serves as the liturgical year for Christians in Eritrea and Ethiopia belonging to the Eritrean Orthodox Tewahedo Church, Ethiopian Orthodox Tewahedo Church, Eastern Catholic Churches, the Coptic Orthodox Church of Alexandria, Ethiopian-Eritrean Evangelicalism. It is a solar calendar which in turn derives from the Egyptian calendar, but like the Julian calendar, it adds a leap day every four years without exception, begins the year on August 29 or August 30 in the Julian calendar. A gap of 7–8 years between the Ethiopian and Gregorian calendars results from an alternative calculation in determining the date of the Annunciation. Like the Coptic calendar, the Ethiopic calendar has 12 months of 30 days plus 5 or 6 epagomenal days, which comprise a thirteenth month; the Ethiopian months begin on the same days as those of the Coptic calendar, but their names are in Ge'ez. A 6th epagomenal day is added every 4 years, without exception, on August 29 of the Julian calendar, 6 months before the corresponding Julian leap day.
Thus the first day of the Ethiopian year, 1 Mäskäräm, for years between 1900 and 2099, is September 11. However, it falls on September 12 in years before the Gregorian leap year. Enkutatash is the word for the Ethiopian New Year in Amharic, the official language of Ethiopia, while it is called Ri'se Awde Amet in Ge'ez, the term preferred by the Ethiopian & Eritrean Orthodox Tewahedo Churchs, it occurs on September 11th in the Gregorian Calendar. The Ethiopian Calendar Year 1998 Amätä Məhrät began on the Gregorian Calendar Year on September 11th, 2005. However, the Ethiopian Years 1992 and 1996 began on the Gregorian Dates of'September 12th 1999' and'2003' respectively; this date correspondence applies for the Gregorian years 1900 to 2099. The Ethiopian leap year is every four without exception, while Gregorian centurial years are only leap years when divisible by 400; as the Gregorian year 2000 is a leap year, the current correspondence lasts two centuries instead. The start of the Ethiopian year falls on August 30th.
This date corresponds to the Old-Style Julian Calendar. This deviation between the Julian and the Gregorian Calendar will increase with the passing of the time. You can observe the real start date in the future centuries in a Gregorian to Ethiopian Date Converter. To indicate the year and followers of the Eritrean churches today use the Incarnation Era, which dates from the Annunciation or Incarnation of Jesus on March 25, AD 9, as calculated by Annianus of Alexandria c. 400. Meanwhile, Europeans adopted the calculations made by Dionysius Exiguus in AD 525 instead, which placed the Annunciation 8 years earlier than had Annianus; this causes the Ethiopian year number to be 8 years less than the Gregorian year number from January 1 until September 10 or 11 7 years less for the remainder of the Gregorian year. In the past, a number of other eras for numbering years were widely used in Ethiopia and the Kingdom of Aksum; the most important era – once used by the Eastern Christianity, still used by the Coptic Orthodox Church of Alexandria – was the Era of Martyrs known as the Diocletian Era, or the era of Diocletian and the Martyrs, whose first year began on August 29, 284.
Respective to the Gregorian and Julian New Year's Days, 31⁄2 to 4 months the difference between the Era of Martyrs and the Anni Domini is 285 years. This is because in AD 525, Dionysius Exiguus decided to add 15 Metonic cycles to the existing 13 Metonic cycles of the Diocletian Era to obtain an entire 532 year medieval Easter cycle, whose first cycle ended with the year Era of Martyrs 247 equal to year DXXXI, it is because 532 is the product of the Metonic cycle of 19 years and the solar cycle of 28 years. Around AD 400, an Alexandrine monk called Panodoros fixed the Alexandrian Era, the date of creation, on 29 August 5493 BC. After the 6th century AD, the era was used by Ethiopian chronologists; the twelfth 532 year-cycle of this era began on 29 August AD 360, so 4×19 years after the Era of Martyrs. Bishop Anianos preferred the Annunciation style as 25 March, thus he shifted the Panodoros era by about six months, to begin on 25 March 5492 BC. In the Ethiopian calendar this was equivalent to 15 Magabit 5501 B.
C.. The Anno Mundi era remained in usage until the late 19th century; the 4 year leap-year cycle is associated with the four Evangelists: the first year after an Ethiopian leap year is named the John-year, followed by the Matthew-year, the Mark-year. The year with the 6th epagomenal day is traditionally designated as the Luke-year. There are no exceptions to the 4 year leap-year cycle, like the Julian calendar but unlike the Gregorian calendar; these dates are valid only from March 1900 to February 2100. This is because 1900 and 2100 are not leap years in the Gregorian calendar, while they are still leap year
The Islamic, Muslim, or Hijri calendar is a lunar calendar consisting of 12 lunar months in a year of 354 or 355 days. It is used to determine the proper days of Islamic holidays and rituals, such as the annual period of fasting and the proper time for the pilgrimage to Mecca; the civil calendar of all countries where the religion is predominantly Muslim is the Gregorian calendar. Notable exceptions to this rule are Afghanistan, which use the Solar Hijri calendar. Rents and similar regular commitments are paid by the civil calendar; the Islamic calendar employs the Hijri era whose epoch was established as the Islamic New Year of 622 AD/CE. During that year and his followers migrated from Mecca to Yathrib and established the first Muslim community, an event commemorated as the Hijra. In the West, dates in this era are denoted AH in parallel with the Christian and Jewish eras. In Muslim countries, it is sometimes denoted as H from its Arabic form. In English, years prior to the Hijra are reckoned as BH.
The current Islamic year is 1440 AH. In the Gregorian calendar, 1440 AH runs from 11 September 2018 to 30 August 2019. For central Arabia Mecca, there is a lack of epigraphical evidence but details are found in the writings of Muslim authors of the Abbasid era. Inscriptions of the ancient South Arabian calendars reveal the use of a number of local calendars. At least some of these South Arabian calendars followed the lunisolar system. Both al-Biruni and al-Mas'udi suggest that the ancient Arabs used the same month names as the Muslims, though they record other month names used by the pre-Islamic Arabs; the Islamic tradition is unanimous in stating that Arabs of Tihamah and Najd distinguished between two types of months and forbidden months. The forbidden months were four months during which fighting is forbidden, listed as Rajab and the three months around the pilgrimage season, Dhu al-Qa‘dah, Dhu al-Hijjah, Muharram. Information about the forbidden months is found in the writings of Procopius, where he describes an armistice with the Eastern Arabs of the Lakhmid al-Mundhir which happened in the summer of 541 AD/CE.
However, Muslim historians do not link these months to a particular season. The Qur'an links the four forbidden months with Nasī’, a word that means "postponement". According to Muslim tradition, the decision of postponement was administered by the tribe of Kinanah, by a man known as the al-Qalammas of Kinanah and his descendants. Different interpretations of the concept of Nasī’ have been proposed; some scholars, both Muslim and Western, maintain that the pre-Islamic calendar used in central Arabia was a purely lunar calendar similar to the modern Islamic calendar. According to this view, Nasī’ is related to the pre-Islamic practices of the Meccan Arabs, where they would alter the distribution of the forbidden months within a given year without implying a calendar manipulation; this interpretation is supported by Arab historians and lexicographers, like Ibn Hisham, Ibn Manzur, the corpus of Qur'anic exegesis. This is corroborated by an early Sabaic inscription, where a religious ritual was "postponed" due to war.
According to the context of this inscription, the verb ns'’ has nothing to do with intercalation, but only with moving religious events within the calendar itself. The similarity between the religious concept of this ancient inscription and the Qur'an suggests that non-calendaring postponement is the Qur'anic meaning of Nasī’; the Encyclopaedia of Islam concludes "The Arabic system of can only have been intended to move the Hajj and the fairs associated with it in the vicinity of Mecca to a suitable season of the year. It was not intended to establish a fixed calendar to be observed." The term "fixed calendar" is understood to refer to the non-intercalated calendar. Others concur that it was a lunar calendar, but suggest that about 200 years before the Hijra it was transformed into a lunisolar calendar containing an intercalary month added from time to time to keep the pilgrimage within the season of the year when merchandise was most abundant; this interpretation was first proposed by the medieval Muslim astrologer and astronomer Abu Ma'shar al-Balkhi, by al-Biruni, al-Mas'udi, some western scholars.
This interpretation considers Nasī’ to be a synonym to the Arabic word for "intercalation". The Arabs, according to one explanation mentioned by Abu Ma'shar, learned of this type of intercalation from the Jews; the Jewish Nasi was the official. Some sources say that the Arabs followed the Jewish practice and intercalated seven months over nineteen years, or else that they intercalated nine months over 24 years. Postponement of one ritual in a particular circumstance does not imply alteration of the sequence of months, scholars agree that this did not happen. Al-Biruni says this did not happen, the festivals were kept within their season by intercalation every second or third year of a month between Dhu al-Hijjah and Muharram, he says that, in terms of the fixed calendar, not introduced until 10 AH, the first intercalation was, for example, of a month between Dhu al-Hijjah and Muharram, the second of a month between Muharram and Safar, the third of a month between Safar and Rabi'I, so on. The intercalations were arranged.
The notice of interca