How it's counted
Days since are counted from the date to today, not including the date itself.
In a spreadsheet
In Excel or Google Sheets, type =TODAY()-18 and format the cell as a date. To count from a different start date, use the date calculator.
18 days before other dates
| Starting from | 18 days earlier |
|---|---|
| Tue, Oct 13 (today) | Friday, September 25, 2026 |
| Mon, Oct 12 | Thursday, September 24, 2026 |
| Sun, Oct 11 | Wednesday, September 23, 2026 |
| Sat, Oct 10 | Tuesday, September 22, 2026 |
| Fri, Oct 9 | Monday, September 21, 2026 |
| Thu, Oct 8 | Sunday, September 20, 2026 |
| Wed, Oct 7 | Saturday, September 19, 2026 |
Days ago
Frequently asked questions
What day is 18 days ago?
18 days ago was Friday, September 25, 2026.
What day of the week is 18 days ago?
It was a Friday.
What was the date 18 days ago?
Friday, September 25, 2026. The date moves forward by one day every day, so this page always counts from today.
How many weeks is 18 days?
18 calendar days is 2.6 weeks.
What date is 18 days from today?
Saturday, October 31, 2026.
Does "18 days ago" include today?
No. Today is day 0, so the count starts from tomorrow (or yesterday, for dates in the past).
How do I work out 18 days ago in Excel or Google Sheets?
Type =TODAY()-18 and format the cell as a date.
How many business days are in 18 days?
From today it is 12 weekdays (Monday to Friday), before public holidays.