The year 1900 wasn't a leap year?

We all know that February is a funny month -- every four years it has one extra day (February 29) instead of the normal 28 days. When February has 29 days, we call it a leap year. The year 2000 was a leap year. But 1900 was not. And neither 1800 nor 1700 were leap years. read more

To get even closer to the actual number, every 100 years is not a leap year, but every 400 years is a leap year. That brings the average length of the year to 365.2425 days, which is very close to the actual number. read more

Nope. Leap years must be evenly divisible by four. If they end in 00 they must also be evenly divisible by 400 to be a leap year. So, 1900 was not, 2000 was, and 2100 will not, be a leap year. read more