ideal • library • calendars • gregorian

Gregorian month.

interface gregorian month

extends deeply immutable data, equality comparable, stringable

Index base 0 (January is 0, February is 1, and so on.)

nonnegative ordinal

Index base 1 (January is 1, February is 2, and so on.)

nonnegative index base 1

Minimum number of days in the month (31 in January, 28 in February, etc.)

nonnegative min days

Maximum number of days in the month (31 in January, 29 in February, etc.) The only difference between min_days and max_days os for February.

nonnegative max days