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What date was 4 weeks ago?

Work out the date 4 weeks before today or any date you pick, with a reference table by month.

4 weeks ago

Working out today's date…

4 weeks before another date

Pick a start date to see the result.

4 weeks before any date

Worked from the 1st of each month of 2026

Start dateDate it wasDayWorking days
January 1, 2026December 4, 2025Thursday20
February 1, 2026January 4, 2026Sunday20
March 1, 2026February 1, 2026Sunday20
April 1, 2026March 4, 2026Wednesday20
May 1, 2026April 3, 2026Friday20
June 1, 2026May 4, 2026Monday20
July 1, 2026June 3, 2026Wednesday20
August 1, 2026July 4, 2026Saturday20
September 1, 2026August 4, 2026Tuesday20
October 1, 2026September 3, 2026Thursday20
November 1, 2026October 4, 2026Sunday20
December 1, 2026November 3, 2026Tuesday20

Other date offsets

4 Weeks From Today the other direction1 Week Ago 2 Weeks Ago 6 Weeks Ago Date Difference Calculator any two dates

The answer at the top of this page is worked out in your browser against today's date, so it is always current — there is no cached "today" baked into the page.

4 weeks is exactly 28 days. Because that is a whole number of weeks, the result always falls on the same day of the week as the start date.

Calendar arithmetic is less obvious than it looks. Subtracting 4 weeks from January 1, 2026 gives December 4, 2025, while the same offset from July 1, 2026 gives June 3, 2026 — the same span, but landing on a different weekday. The table above lists the result from the 1st of every month of 2026 so you can read off the pattern directly.

For an offset from a date other than today, enter it in the start-date box above. To measure the gap between two dates you already have, use the date difference calculator.

How many days is 4 weeks?

4 weeks is exactly 28 days. Because that is a whole number of weeks, the result always falls on the same day of the week as the start date.

What is 4 weeks before January 1, 2026?

Thursday, December 4, 2025. The table on this page lists the answer from the 1st of every month of 2026; for any other start date, use the start-date box at the top of the page.

What is 4 weeks before a specific date?

Enter the date in the "4 weeks before another date" box on this page: it shows the date 4 weeks earlier, its weekday, and the working days in between. That is always 28 calendar days before the date you enter.

How many working days is 4 weeks?

20 — 4 weeks always contains exactly 20 Monday-to-Friday days, whichever day you start on. Public holidays are not excluded.

What date is 4 weeks from today?

That is the same distance in the other direction — see the 4 weeks from today page for a live answer and its own reference table.