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2014-07-30T17:02:30+05:30
The Brainliest Answer!
2014-07-30T17:53:51+05:30
because of the Romans.Their calendars were confusing and irregular. About 4 kings had changed the calendars repeatedly. That's why February was left with only 28 days. And 29 in leap years. 

Hope I helped. :)
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