Today is April Fools’ Day, the annual holiday that celebrates pranking, hoaxes, and all manner of horseplay and tomfoolery.

In the ancient world, there were far more radical ... In the 1500s, the old Julian calendar was replaced by the Gregorian calendar. But different countries in Europe adopted the new calendar ...

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

Ethiopians follow the ancient Julian calendar, and like many other Orthodox Christians they celebrate Christmas on 7 January (or according to the Ge'ez Ethiopian calendar, the 29th day of Tahsas).