Chinese calendar dating

26 Nov

It was rarely used in the Roman calendar and in the early Julian calendar – naming the two consuls that held office in a particular year was dominant.AD 2018 is thus approximately the same as AUC 2771 (2018 753).Soon afterwards, imperial regnal dating was adopted in its place.Another method of dating, rarely used, was anno urbis conditae (Latin: "in the year of the founded city" (abbreviated AUC), where "city" meant Rome).The Olympic Games provided the various independent city-states with a mutually recognizable system of dates. Another common system was the indiction cycle (15 indictions made up an agricultural tax cycle in Roman Egypt, an indiction being a year in duration).Documents and events began to be dated by the year of the cycle (e.g., "fifth indiction", "tenth indiction") in the 4th century, and this system was used long after the tax ceased to be collected.The system was introduced by Marcus Terentius Varro in the 1st century BC.The first day of its year was Founder's Day (April 21), although most modern historians assume that it coincides with the modern historical year (January 1 to December 31).

For over a thousand years, ancient Assyria used a system of eponyms to identify each year.

A calendar era is the year numbering system used by a calendar.

For example, the Gregorian calendar numbers its years in the Western Christian era (the Coptic Orthodox and Ethiopian Orthodox churches have their own Christian eras).

This is an invaluable chronological aid, because a solar eclipse was recorded as having taken place in the limmu of Bur-Sagale, governor of Guzana.

Astronomers have identified this eclipse as one that took place on 15 June, 763 BC, which has allowed absolute dates of 892 to 648 BC to be assigned to that sequence of eponyms.