February is packed with interesting observances, but one that stands out is Leap Day—and the Leap Year that makes it possible ...

The Ethiopian calendar consists of 13 months, with 12 months of 30 days each and an extra month called Pagumē, which has five or six days depending on whether it is a leap year. Ethiopia also ...

which is why we have a leap year every four years with 366 days instead of the usual 365. So, leap years help us keep our calendars aligned with Earth's orbit around the sun. Without them ...

Since Leap Year occurs once every four years — 2020, 2024 and 2028 is the next one, for example — this "Leap Day math" applies to people born Feb. 29. (Scroll down for a list of celebrities ...