The original Roman calendar divided the year from March to December into 10 months of either 29 or 31 days, based on lunar ...

Prior to the Gregorian and even Julian calendars, Roman King Numa Pompilius (715-673 BC) set about creating a calendar with equal-length months, the University of Chicago said. "When Numa ...

Easter is fast approaching. Here's a look at why the date of Easter changes every year and what to know about the holiday.

During an ecumenical prayer service at St. Paul Outside the Walls to mark the end of the Week of Prayer for Christian Unity, ...

But the Julian calendar, which is what Christians used in the fourth century, was increasingly out of sync with the actual ...

Presidents Day is a federal holiday celebrated each year in mid-February to honor past U.S. presidents. Locally, it's part of ...

A remote Shetland island is celebrating its traditional New Year's Day - two weeks after other parts of the world. Foula - which is home to fewer than 40 people - never fully adopted the modern ...

preferring instead to follow some of the traditions of the Julian calendar. So this sees islanders celebrate Christmas on 6 January rather than 25 December, and New Year's Day on 13 January.