MadSci Network: Other

Subject: Why isn't there a leap year every 100 years

Date: Sat Jan 9 16:26:49 1999
Posted by Kate Maunder
Grade level: 10-12
School: Carinya
City: Tamworth State/Province: NSW
Country: Australai
Area of science: Other
ID: 915920809.Ot

AS children, we are taught that there are 365 1/4 days in a year, 
and therefore there are 366 days in a leap year.  But recently I 
read "Every year that is exactly divisible by 4 is a leap year, 
except for years that are exactly divisible by 100; these 
centurial years are leap years only if they are exactly divisible 
by 400.  Why?

Thank you

Re: Why isn't there a leap year every 100 years

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