What was the date 100 days ago?
100 days ago was Friday, August 7, 2026
That was 14 weeks and 2 days ago, or about 3.3 months.
Counted from today, Sunday, November 15, 2026, in your time zone.
100 days in other units
- Weeks
- 14 weeks and 2 days
- Calendar months
- 3 months and 8 days
- Business days
- 70 days
- 67 without US federal holidays
- Weekends
- 15 weekends
- Hours
- 2,400
- Minutes
- 144,000
About August 7, 2026
- It was a Friday, a weekday.
- Day 219 of 365, in ISO week 32 of 2026.
Work it out in a spreadsheet
Paste one of these into Excel or Google Sheets, then format the cell as a date.
In Excel or Google Sheets
- Counting back from today:
=TODAY()-100 - From a date in cell A1:
=A1-100
From a different start date
The same 100 days, counted back from each of the next six days:
| Start date | 100 days earlier |
|---|---|
| Mon, Nov 16, 2026 | Sat, Aug 8, 2026 |
| Tue, Nov 17, 2026 | Sun, Aug 9, 2026 |
| Wed, Nov 18, 2026 | Mon, Aug 10, 2026 |
| Thu, Nov 19, 2026 | Tue, Aug 11, 2026 |
| Fri, Nov 20, 2026 | Wed, Aug 12, 2026 |
| Sat, Nov 21, 2026 | Thu, Aug 13, 2026 |
More days ago
Related
Frequently asked questions
Does "100 days ago" count today?
No. Yesterday was 1 day ago, so 100 days ago was Friday, August 7, 2026. Counting today as day 1 gives Saturday, August 8, 2026.
How many weeks ago is that?
14 weeks and 2 days ago, about 3.3 months.
How many business days have passed since then?
70 business days (Monday to Friday, up to and including today), or 67 business days if you also leave out US federal holidays.