@[inline]
Converts the Year
offset to a Month
offset.
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@[inline]
Determines if a year is a leap year in the proleptic Gregorian calendar.
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Calculates the number of days in the specified year
.
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Calculates the number of weeks in the specified year
.
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@[reducible, inline]
Checks if the given date is valid for the specified year, month, and day.