Feb. 29, leap day, comes every four years. It’s the day Lloyd Stephen Riford Jr. was born back in 1924 in New York. But when it’s not a leap year, which day do leap year babies celebrate — F ...

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 ...