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Sigma KEE - LeapYear
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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
leap year
The Class of all leap years. These are years which are either (i.) evenly divisible by 4 and not by 100 or (ii.) evenly divisible by 400 (this latter case is known as a leap century).
Relationships      
Parents year The Class of all calendar Years.


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