Julius Caesar was believed to have messed up the months in a year, but was trying to fix the solar calendar, resulting in one ...

These graphics explain why Easter Sunday changes each year based on ancient interpretations of the solar and lunar cycles.

Christians around the world will celebrate on the same day this year, a relative rarity. Pope Francis would like to make it ...

S ome years seem to zip by in the blink of an eye, while others seem to drag on for far longer. But some, like leap years, can last a little longer than usual. And then there's 46 BCE, which lasted ...

Here’s the history of April Fools’ Day and which restaurants are running April Fools' Day price cuts instead of pranks today, ...

Father Frans Bouwen, a leading voice in ecumenical dialogue, holds that “there are no real theological reasons” to justify ...