Why does a leap year have 366 days? Does the Earth move slower ... where people had a calendar with 355 days instead of 365 because it was based on cycles and phases of the Moon.

Come to find out, there are plenty of leap year traditions and superstitions all around the world. Plenty of weird and wild ...

Leap years help to keep the 12-month calendar matched up with Earth’s movement around the Sun. After four years, those leftover hours add up to a whole day. In a leap year, we add this extra day ...

This correction was later found to be an overestimation of the year by 11 minutes and 14 seconds, amounting to 5.1204 days in 400 years. A course correction was brought about: to drop three days in ...

Day-to-day calendar (one that can be used again and again, in any year). 366 bite-size entries, with anecdotes, observations, fun facts, and other confections tied to a single song, perfect for ...