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MATHEMATICA FEATURED EXAMPLE
Find Leap Years
By using LeapYearQ with DateDifference, you can find leap years and the intervals between them.
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While leap years most commonly come in four-year intervals, they sometimes come every eight years. This is because a traditional leap day every four years is actually a slight overcompensation in the calendar. Thus, a leap year is skipped every 100 years when those years are not divisible by 400:
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