Working days in September 2028
September 2028 has 20 working days in the United States: 21 weekdays minus 1 federal holiday, Labor Day on Monday 4 September. At 8 hours a day that is 160 working hours. The month runs from Friday 1 September to Saturday 30 September: 30 days, 21 weekdays and 9 weekend days.
- Working days
- 20
- Working hours
- 160
- Weekdays
- 21
- Weekend days
- 9
- Federal holidays
- 1
- Calendar days
- 30
- First working day
- Friday 1 September
- Last working day
- Friday 29 September
Calendar for September 2028
| 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 Friday, so Friday 1 September is also its first working day. It ends on a weekend, Saturday 30 September, which makes Friday 29 September the last working day. September 2028 has five Fridays and five Saturdays, and four of every other day: 4 Mondays to start a week on and 5 Fridays to finish one. It covers days 245 to 274 of the year and ISO weeks 35 to 39.
Working days in each week of September 2028
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 35 | 1 to 3 September | 1 | Part week, the month starts mid-week |
| Week 36 | 4 to 10 September | 4 | Labor Day |
| Week 37 | 11 to 17 September | 5 | Full week, no holiday |
| Week 38 | 18 to 24 September | 5 | Full week, no holiday |
| Week 39 | 25 to 30 September | 5 | Part week, the month ends mid-week |
How the working days in September 2028 are counted
One federal holiday falls in September 2028: Labor Day on Monday 4 September 2028. It takes one weekday out of the count, leaving 20 working days from 21 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 20 as the federal baseline for September 2028 and adjust it for your own calendar.
September 2028 next to the months around it
September 2028 has 20 working days, three days fewer than August 2028 (23) and one day fewer than October 2028 (21). A 30-day month has 20, 21 or 22 weekdays depending on the day it starts on; a Friday start gives September 2028 21.
September is the third month of the third quarter. Q3 2028 has 63 working days in total: July 20, August 23 and September 20. That is 504 working hours for the quarter at 8 hours a day, out of 2,000 for the whole of 2028.
Count working days in September 2028 with your own holidays
Open the business days calculator with September 2028 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 2028?
20. September 2028 has 21 weekdays (Monday to Friday) and 1 federal holiday on a weekday, Labor Day on Monday 4 September, which leaves 20. Weekends, 9 days this month, are not working days. Business days in September 2028 are the same 20, running from Friday 1 September to Friday 29 September.
How many working hours are in September 2028?
Working hours in September 2028 come to 160 at 8 hours a day: 20 working days times 8. On a 7.5 hour day it is 150 hours, and a 40 hour week over 21 weekdays with no holidays would be 168 hours.
Is there a federal holiday in September 2028?
Yes, one: Labor Day on Monday 4 September 2028. It falls on a weekday, so it is taken off the count.
Is Labor Day a business day?
Not in the federal count on this page. Labor Day 2028 is Monday 4 September. As a federal holiday, it is left out of the 20 business days in September 2028. Most federal employees are off that Monday; private employers set their own holidays, so a business that opens on that day counts it as an ordinary working day.
What are the first and last working days of September 2028?
The first working day is Friday 1 September 2028. The last working day is Friday 29 September 2028, because the month ends on a Saturday.
How many weekends are in September 2028?
9 weekend days: 5 Saturdays and 4 Sundays. That is the usual nine for a month of this length and starting day.