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.
Wednesday, October 12, 2078
Added to Monday, September 12, 2078.
ISO date2078-10-12
WeekdayWednesday
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.