How many days are in September?
September has 30 days. April, June and November also have 30 days.
September by year
| Year | Days | Starts on | Ends on | Weekdays |
|---|---|---|---|---|
| 2026 | 30 | Tuesday | Wednesday | 22 |
| 2027 | 30 | Wednesday | Thursday | 22 |
| 2028 | 30 | Friday | Saturday | 21 |
| 2029 | 30 | Saturday | Sunday | 20 |
| 2030 | 30 | Sunday | Monday | 21 |
September is month number 9 of 12. 30 days is 4 weeks and 2 days, so two days of the week appear five times.
See the days until September 1, every month on the days in a month page, or the 2027 calendar.