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

In this combination photo Pope Francis walks past flowers as he celebrates Easter Mass in St. Peter's Square at the Vatican April 16, 2017, and Members of the Ukrainian community in Sacramento, Calif.

But when exactly Easter Sunday occurs during the season changes each year. In 2025, the holiday is April 20, which is one of ...

Imagine going to bed October 4, 1582, only to wake up the next morning and find out it was October 15. No, this was not a ...

For centuries, churches have used different methods to calculate the date of Easter. Rarely do they coincide. The search for ...

Fool's Day will be celebrated across the globe on April 1. The history of April Fool's Day dates back to the 16th century in ...

For example, the Julian date for December 11 ... 3268. Contrast with "Gregorian date," which is the common calendar notation of month, day and year. THIS DEFINITION IS FOR PERSONAL USE ONLY.