The next time is this Thursday, when we'll have a rare Feb. 29. What is Leap Day, and why do we have it? Short answer: Every four years, in the same years as American presidential elections and ...

A lot of annoying little hacks are needed to keep our integer-based calendar in sync with a floating-point universe, and the big one, leap day, passed us by this week. Aside from the ignominy of a ...

Need a break? Play the USA TODAY Daily Crossword Puzzle. Generally, every year that's evenly divisible by four contains a Leap Day — 2020, 2024, 2028 and so on. However, Leap Day is skipped in ...