What date was 4 weeks ago?

If you count back 4 weeks from today, you land on Wednesday, September 30, 2026. That day was a Wednesday, day 273 of 2026, in ISO week 40. The gap is 28 calendar days (4 weeks).

Today is not counted as day 1: the first day counted is tomorrow (or yesterday when you count back). This is how deadlines, notice periods and delivery dates are usually calculated. Between the two dates there are 20 business days, Monday to Friday, before public holidays are taken off.

The answer above uses your own time zone, so it is always correct for where you are. To count from a different start date, or to skip weekends, use the calculator below.