Space, GPS & MapsTimekeeping
Why 2100 Won't Be a Leap Year
The calendar has a rule for its rule
2000 had a February 29. 2100 won't, even though it's divisible by four. Who wrote that exception, and why?
You'll find out
- Why a year isn't 365 days
- Why every fourth year overshoots
- The days nobody ever lived
Why it matters
Calendars keep seasons, holidays and software in step; this rule is why the seasons stay in their months.
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