Days ago calculator
Count back any number of days from today, or from a date you pick, to find the date and the weekday it was.
30 days ago was
Monday, August 31, 2026
That was 4 weeks and 2 days ago.
Quick answers
Counted back from today, Wednesday, September 30, 2026. Each one has its own page with conversions and a spreadsheet formula.
- 1 day ago: Tuesday, September 29, 2026
- 2 days ago: Monday, September 28, 2026
- 3 days ago: Sunday, September 27, 2026
- 4 days ago: Saturday, September 26, 2026
- 5 days ago: Friday, September 25, 2026
- 6 days ago: Thursday, September 24, 2026
- 7 days ago: Wednesday, September 23, 2026
- 8 days ago: Tuesday, September 22, 2026
- 9 days ago: Monday, September 21, 2026
- 10 days ago: Sunday, September 20, 2026
- 14 days ago: Wednesday, September 16, 2026
- 15 days ago: Tuesday, September 15, 2026
- 20 days ago: Thursday, September 10, 2026
- 21 days ago: Wednesday, September 9, 2026
- 30 days ago: Monday, August 31, 2026
- 40 days ago: Friday, August 21, 2026
- 45 days ago: Sunday, August 16, 2026
- 60 days ago: Saturday, August 1, 2026
- 90 days ago: Thursday, July 2, 2026
- 100 days ago: Monday, June 22, 2026
- 120 days ago: Tuesday, June 2, 2026
- 180 days ago: Friday, April 3, 2026
- 365 days ago: Tuesday, September 30, 2025
How it's calculated
Yesterday is 1 day ago, so N days ago is today's date minus N; today itself isn't counted. Everything follows your own time zone.
In Excel or Google Sheets
- 30 days ago:
=TODAY()-30 - From a date in cell A1:
=A1-30
More date calculators
Frequently asked questions
Does "days ago" include today?
No. Yesterday was 1 day ago, so 30 days ago is today's date minus 30.
How do I count back from another date?
Change the start date in the calculator. The spreadsheet version is =A1-30 with your date in cell A1.
How far back can I go?
Up to 3,650 days, about ten years. For longer spans, the date duration calculator works with any two dates.