Шаблон:IsLeapYear

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Usage:

{{IsLeapYear|''year''}}

year defaults to {{CURRENTYEAR}}.

0, 2007 is no leap year.

1, 2008 is a leap year.

0, 2100 is no leap year.

1, 2400 is a leap year.

0, proleptic Gregorian calendar.

0 for 101 BC (mostly pointless).

1, guess why.