Date, age and working days

Count calendar or working days, calculate age, and add days or months using your weekend and holiday rules.

Start date

End date

Include start dateInclude end date

Weekend days to exclude

Your holidays, one ISO date per line

Working days

5 counted calendar days, 0 distinct weekday holidays excluded.

Dates without timezone surprises

Calendar dates use calendar arithmetic, so daylight-saving changes do not turn one day into 23 or 25 hours. Working days use the weekend choices and holidays you enter. Age conventions and month overflow rules are explicit choices.

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