We once used to embrace a 13-month calendar, and some cultures still follow this format. So why are they 12 months instead of 13?

As Iranians celebrate the Persian New Year, explore the fascinating calendars still used around the world—shaped by sun, moon ...

Easter's date is based on the lunar calendar. Easter is observed on the first Sunday ... according to the Old Farmer's ...

For instance, if Ramadan began on March 1, 2024, the moon sighting will occur on the evening of March 29. A confirmed sighting on that night would indicate Eid al-Fitr will be celebrated on March 30.

Easter's date is based on the lunar calendar. Easter is observed ... according to the Old Farmer's Almanac. In the Gregorian calendar, it is always observed on a Sunday between March 22 and ...