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

But the Gregorian calendar isn’t the only legacy Pope Gregory left. His papacy encompassed a broad spectrum of achievements that have left a lasting mark on the world. Rise to papacy Born in ...

In 1582, Pope Gregory XIII reformed the calendar, dropping 10 days and making the equinox fall on March 21 again. Most Eastern Christians did not adopt the new calendar, leading to a situation where ...

In 1582, Pope Gregory XIII reformed the calendar, dropping 10 days and making the equinox fall on March 21 again. Most Eastern Christians did not adopt the new calendar, leading to a situation ...

Pope Francis reaffirms Catholic Church's willingness to accept a common date for Easter in the West and East, highlighting ...

Getty Images Foula is less than five miles long More than four centuries ago, Pope Gregory XIII designed the calendar used today to replace the Julian calendar, which had miscalculated the number ...

Finally, the calendar we all know was adopted by Pope Gregory XIII in 1582. After skipping 10 days in October 1582 to "catch up," it has changed little since then. What to know about February and ...

Eventually, the calendar we all know was adopted by Pope Gregory XIII in 1582, and it's changed little since then — not that the system is flawless. February gets a leap year once every four ...