Working days in September 2026
September 2026 has 21 working days in the United States: 22 weekdays minus 1 federal holiday, Labor Day on Monday 7 September. At 8 hours a day that is 168 working hours. The month runs from Tuesday 1 September to Wednesday 30 September: 30 days, 22 weekdays and 8 weekend days.
- Working days
- 21
- Working hours
- 168
- Weekdays
- 22
- Weekend days
- 8
- Federal holidays
- 1
- Calendar days
- 30
- First working day
- Tuesday 1 September
- Last working day
- Wednesday 30 September
Calendar for September 2026
| Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | |
| 7 | 8 | 9 | 10 | 11 | 12 | 13 |
| 14 | 15 | 16 | 17 | 18 | 19 | 20 |
| 21 | 22 | 23 | 24 | 25 | 26 | 27 |
| 28 | 29 | 30 |
- Weekend
- Federal holiday
The month opens on a Tuesday, so Tuesday 1 September is also its first working day. It ends on a Wednesday, so Wednesday 30 September is the last working day as well. September 2026 has five Tuesdays and five Wednesdays, and four of every other day: 4 Mondays to start a week on and 4 Fridays to finish one. It covers days 244 to 273 of the year and ISO weeks 36 to 40.
Working days in each week of September 2026
Weeks run Monday to Sunday and carry their ISO week number. Only the days inside September are counted, so a week the month shares with August or October shows just its share.
| Week | Dates | Working days | Note |
|---|---|---|---|
| Week 36 | 1 to 6 September | 4 | Part week, the month starts mid-week |
| Week 37 | 7 to 13 September | 4 | Labor Day |
| Week 38 | 14 to 20 September | 5 | Full week, no holiday |
| Week 39 | 21 to 27 September | 5 | Full week, no holiday |
| Week 40 | 28 to 30 September | 3 | Part week, the month ends mid-week |
How the working days in September 2026 are counted
One federal holiday falls in September 2026: Labor Day on Monday 7 September 2026. It takes one weekday out of the count, leaving 21 working days from 22 weekdays.
The rule is the same on every page here: count Monday to Friday, then take off any federal holiday that lands on one of those days. The holiday dates are the ones the US Office of Personnel Management publishes for federal pay and leave. State holidays, religious holidays and company closures are not included, and other countries have different lists entirely, so treat 21 as the federal baseline for September 2026 and adjust it for your own calendar.
September 2026 next to the months around it
September 2026 has 21 working days, the same as August 2026 and the same as October 2026. A 30-day month has 20, 21 or 22 weekdays depending on the day it starts on; a Tuesday start gives September 2026 22.
September is the third month of the third quarter. Q3 2026 has 64 working days in total: July 22, August 21 and September 21. That is 512 working hours for the quarter at 8 hours a day, out of 2,000 for the whole of 2026.
Count working days in September 2026 with your own holidays
Open the business days calculator with September 2026 filled in, with the federal holiday dates already in the holiday box. Add your state or company holidays, or take out the federal ones that your employer does not observe, and the count updates as you type. The calculator can also count from a date in the middle of the month, or find the date a set number of working days ahead, which is how most deadlines are written.
Questions people ask
How many working days are in September 2026?
21. September 2026 has 22 weekdays (Monday to Friday) and 1 federal holiday on a weekday, Labor Day on Monday 7 September, which leaves 21. Weekends, 8 days this month, are not working days.
How many working hours are in September 2026?
168 hours at 8 hours a day: 21 working days times 8. On a 7.5 hour day it is 157.5 hours, and a 40 hour week over 22 weekdays with no holidays would be 176 hours.
Is there a federal holiday in September 2026?
Yes, one: Labor Day on Monday 7 September 2026. It falls on a weekday, so it is taken off the count.
What are the first and last working days of September 2026?
The first working day is Tuesday 1 September 2026. The last working day is Wednesday 30 September 2026.
How many weekends are in September 2026?
8 weekend days: 4 Saturdays and 4 Sundays. Eight is the fewest a month can have, so most of the month is working time.