September 2025 Calendar: Working Days & Holidays
September 2025 has 30 days: 21 working days, 8 weekend days and 1 federal holidays on weekdays — 168 hours at 8 hours a day.
Federal holiday Observance
| Sun | Mon | Tue | Wed | Thu | Fri | Sat |
|---|---|---|---|---|---|---|
| 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 |
- Working days21
- Weekends8
- Holidays1
- Hours (8 h/day)168
Working days are Monday to Friday minus federal holidays; a holiday on a Saturday is observed on Friday and one on a Sunday on Monday. State holidays and company schedules may differ.
Holidays in September 2025
Frequently asked questions
How many working days are in September 2025?
September 2025 has 21 working days for federal employees (Monday to Friday minus federal holidays), or 168 hours at 8 hours a day.
What holidays are in September 2025?
Labor Day (September 1).
What day of the week does September 2025 start on?
September 2025 starts on Monday, September 1, 2025.