Easter is observed on the first Sunday after the first full moon following the spring equinox. If it seems as if Easter is ...

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

The Jewish calendar is a lunisolar calendar based on lunar months that begins with the first day of Rosh Hashanah, according to the U.S. Naval Observatory Astronomical Applications Department.

Here's what to know about the feast in Michigan. Passover is celebrated for eight days. This year, it is April 12-20, ...