Anno Mundi

Anno Mundi, abbreviated as AM or A.M., or Year After Creation, is a calendar era based on biblical accounts of the creation of the world and subsequent history. Two such calendar eras of notable use are:Since the Middle Ages, the Hebrew calendar has been based on rabbinic calculations of the year of creation from the Hebrew Masoretic Text of the Bible. This calendar is used within Jewish communities for religious purposes and is one of two official calendars in Israel. In the Hebrew calendar, the day begins at sunset. The calendar's epoch, corresponding to the calculated date of the world's creation, is equivalent to sunset on the proleptic Julian calendar date 6 October 3761 BCE. The new year begins at Rosh Hashanah, in Tishrei. Anno Mundi 5786 began at sunset on September 22, 2025, according to the Gregorian calendar. The Creation Era of Constantinople was observed by Christian communities within the Eastern Roman Empire as part of the Byzantine calendar and retained by Eastern Orthodoxy until 1728. Its Year One, marking the assumed date of creation, was September 1, 5509 BC, to August 31, 5508 BC. This would make the current year 7534.