The number of years in AD can be divided by 4 into a leap year, but the number of years in the whole hundred (0 in the single and ten digits) must be divisible by 400 to be a leap year (for example, 1900 is not a leap year). For example: 1997 was a normal year, 2002 was a normal year, 1996 was a leap year, and 2000 was a leap year. There are 28 days in February in a normal year and 29 days in February of a leap year.

Query by year range

Data entry required to check year range

Starting Year: 2005

End year: 2019

Click "List valid leap years" to output the results.

Calculation results

Calculate leap years in this range, from 2005 to 2019

What are the average and leap years? 2008; 2012; 2016

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