September 2026 calendar
September 2026 starts on a Tuesday and has 22 weekdays. The autumn equinox is on Wednesday 23 September.
Bank holidayTodayWk = ISO week number
September 2026
| Wk | Mo | Tu | We | Th | Fr | Sa | Su |
|---|
| 36 | | 1 | 2 | 3 | 4 | 5 | 6 |
|---|
| 37 | 7 | 8 | 9 | 10 | 11 | 12 | 13 |
|---|
| 38 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
|---|
| 39 | 21 | 22 | 23 | 24 | 25 | 26 | 27 |
|---|
| 40 | 28 | 29 | 30 | | | | |
|---|
Key dates in September 2026
| Date | Occasion |
|---|
| Wed 23 Sep | Autumn equinox |
Schools in England, Wales and Northern Ireland usually go back in the first week of September. See school term dates.
September 2026 in numbers
- 30 days, from Tuesday 1 September 2026 to Wednesday 30 September 2026: days 244 to 273 of the year.
- 22 weekdays and 8 weekend days.
- 22 working days in England and Wales, 22 in Scotland and 22 in Northern Ireland.
- ISO weeks 36 to 40, from Monday 31 August to Sunday 4 October 2026.
- Quarter 3 of 2026.
See the full 2026 calendar, or go to August 2026 or October 2026. Also see the UK bank holidays list and today's week number.
Frequently asked questions
How many working days are in September 2026?
September 2026 has 22 weekdays and no bank holidays in England and Wales, so all 22 are working days.
What week numbers are in September 2026?
September 2026 covers ISO weeks 36 to 40. Week 36 starts on Monday 31 August 2026 and week 40 ends on Sunday 4 October 2026.