The Romans added January and February to the calendar but ran into a problem — math and superstition. Here's why February became the odd month out.

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 ...

Sometimes it's in late April and everyone can get decked out in their Sunday best without bundling up under a bulky winter ...

When is the next leap year? Here are some fascinating leap year facts, along with all the details about why leap day always falls on Feb. 29.

London (CNN) — King Charles and Queen Camilla will travel to Italy and the Vatican in April to meet with Pope Francis, as the Catholic Church celebrates a special Jubilee year, which takes place ...

In his message for the 11th International Day of Prayer and Awareness Against Human Trafficking, Pope Francis on Friday encouraged the world to not lose hope in the belief that it is possible to ...