How to use
- Pick a base date, or click Today to use today's date.
- Choose Add or Subtract using the segmented control.
- Select the unit: Day, Week, Month, or Year.
- Enter the amount to offset.
- Read the resulting date, its weekday, and how many days it is from today.
Examples
- Adding 90 days to 2026-06-09 gives 2026-09-07, a Monday, which is 90 days from today.
- Subtracting 6 months from 2026-06-09 gives 2025-12-09, a Tuesday, shown as 182 days in the past.