From leap years to lunar months measured with remarkable precision, the Hebrew calendar uses an intricate mathematical system ...

An ancient Qumran calendar reveals a battle over Jewish timekeeping, from Antiochus’ rule and the struggle between the Zadokites and Hasmoneans to the dispute between Rabban Gamliel and Rabbi Joshua o ...

Polytheistic religions are mainly focused on the many activities of the various Gods which are either timeless as in ancient Egypt, or are measured in vast numbers of years as in ancient India. The ...

The Jewish holiday of Passover runs from Monday, April 22 at nightfall through Tuesday, April 30, which is much later than usual. The date largely has to do with its place on the lunar calendar.

Hanukkah is an eight-day Jewish holiday whose dates change annually because it follows the Hebrew lunar calendar. The holiday commemorates the miraculous victory of the Maccabees and a single day's ...