Add or subtract dates
Move a date by calendar units. Years are applied first, then months, then weeks and days; invalid month-end dates clamp to that month’s final day.
Saturday, February 8, 2081
Added to Thursday, January 9, 2081.
ISO date2081-02-08
WeekdaySaturday
Absolute day distance30
Month-end clamping happens after years and again after months. For example, subtracting one month from March 31 lands on February 28 or 29.