isFirstDayOfMonth

Checks if the current date is the first day of the month.

`isFirstDayOfMonth()`

Checks if the current date is the first day of the month.

isFirstDayOfMonth(): boolean

boolean - Whether first day

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Last updated: Thu, May 21, 2026 05:51:00AM (UTC)

isDST

Checks if a date falls within a Daylight Saving Time period.

isLastDayOfMonth

Checks if the current date is the last day of the month.