the Greek calendar

The Greek calendar was primarily lunar, based around the phases of the moon, with months starting at the new moon. Each month had either 29 or 30 days, leading to a year of about 354 days. To align the calendar with the solar year, the Greeks periodically added an extra month. Various city-states had their own versions, with the Athenian calendar being well-documented. Major festivals and civic duties were scheduled according to this calendar, highlighting its importance in ancient Greek society for agriculture, religion, and public life.