Calendar era
| Gregorian calendar | 2017 MMXVII |
| Ab urbe condita | 2770 |
| Armenian calendar | 1466 ԹՎ ՌՆԿԶ |
| Assyrian calendar | 6767 |
| Bahá'í calendar | 173–174 |
| Bengali calendar | 1424 |
| Berber calendar | 2967 |
| British Regnal year | 65 Eliz. 2 – 66 Eliz. 2 |
| Buddhist calendar | 2561 |
| Burmese calendar | 1379 |
| Byzantine calendar | 7525–7526 |
| Chinese calendar |
丙申年 (Fire Monkey) 4713 or 4653 — to — 丁酉年 (Fire Rooster) 4714 or 4654 |
| Coptic calendar | 1733–1734 |
| Discordian calendar | 3183 |
| Ethiopian calendar | 2009–2010 |
| Hebrew calendar | 5777–5778 |
| Hindu calendars | |
| - Vikram Samvat | 2073–2074 |
| - Shaka Samvat | 1938–1939 |
| - Kali Yuga | 5117–5118 |
| Holocene calendar | 12017 |
| Igbo calendar | 1017–1018 |
| Iranian calendar | 1395–1396 |
| Islamic calendar | 1438–1439 |
| Japanese calendar |
Heisei 29 (平成２９年) |
| Javanese calendar | 1950–1951 |
| Juche calendar | 106 |
| Julian calendar | Gregorian minus 13 days |
| Korean calendar | 4350 |
| Minguo calendar |
ROC 106 民國106年 |
| Nanakshahi calendar | 549 |
| Thai solar calendar | 2560 |
| Unix time | 1483228800 – 1514764799 |
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 and Ethiopic churches have their own Christian eras, see below). The instant, date, or year from which time is marked is called the epoch of the era. There are many different calendar eras.
In antiquity, regnal years were counted from the ascension of a monarch. This makes the Chronology of the ancient Near East very difficult to reconstruct, based on disparate and scattered king lists, such as the Sumerian King List or the Babylonian Canon of Kings. In East Asia, reckoning by era names chosen by ruling monarchs ceased in the 20th century except for Japan, where they are still used.
For over a thousand years, ancient Assyria used a system of eponyms to identify each year. Each year at the Akitu festival (celebrating the Mesopotamian new year), one of a small group of high officials (including the king in later periods) would be chosen by lot to serve as the limmu for the year, which meant that he would preside over the Akitu festival and the year would bear his name. The earliest attested limmu eponyms are from the Assyrian trading colony at Karum Kanesh in Anatolia, dating to the very beginning of the 2nd Millennium BC, and they continued in use until the end of the Neo-Assyrian Period, ca. 612 BC.
Assyrian scribes compiled limmu lists, including an unbroken sequence of almost 250 eponyms from the early 1st Millennium BC. This has been 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 eponyms. This list of absolute dates has allowed many of the events of the Neo-Assyrian Period to be dated to a specific year, avoiding the chronological debates that characterize earlier periods of Mesopotamian history.
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Wikipedia