Leap Year
No. 2100 is not a leap year.
February 2100 has 28 days, and the year has 365 days total.
2100 is divisible by 100 but not by 400, so — unlike most multiples of 4 — it is NOT a leap year. This is the exception most people don't learn in school.
The rule in full: a year is a leap year if it's divisible by 4 — except century years (divisible by 100), which are only leap years if they're also divisible by 400. That's why 2000 was a leap year but 1900 and 2100 are not, despite all three being divisible by 100.
Next leap year after 2100: 2104. Previous leap year before 2100: 2096.
Need to check a different year, or calculate the day of the week for a specific date? See the Leap Year Checker or Day of the Week Finder.
Related
Check any year, including ones outside this list.
The next leap year after 2100 (outside this list's range).
Browse every leap year from 2000 to 2100.