There are also whole leap days once every four years | Hacker News

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friendzis on Jan 6, 2015 | parent | context | favorite | on: A positive leap second will be introduced at the e...

There are also whole leap days once every four years

RIMR on Jan 6, 2015 [–]

Not quite that simple:

    if (year is not divisible by 4) then (it is a common year)
    else
    if (year is not divisible by 100) then (it is a leap year)
    else
    if (year is not divisible by 400) then (it is a common year)
    else (it is a leap year)

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