| Wk | Sun | Mon | Tue | Wed | Thu | Fri | Sat |
|---|---|---|---|---|---|---|---|
| 36 | 1Labor Day | 2 | 3 | 4 | 5 | 6 | |
| 37 | 7 | 8 | 9 | 10 | 11 | 12 | 13 |
| 38 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
| 39 | 21 | 22 | 23Fall Equinox | 24 | 25 | 26 | 27 |
| 40 | 28 | 29 | 30 |
September 2031 at a Glance
- Working days
- 21 of 30
- Weekend days
- 8
- Day of year
- 244–273
- Quarter
- Q3 · 92 days left in 2031
September 2031 starts on a Monday and ends on a Tuesday. Long weekends this month: Labor Day (Aug 30 – Sep 1, 3 days).
Holidays & Observances in September 2031
US Federal Holidays
- Labor DayMon, Sep 1
Honors American workers on the first Monday of September; the unofficial end of summer.
Public Holidays Around the World in September 2031
Scheduling with teams or family abroad? These countries have public holidays this month.
🇨🇦 Canada holidays 2031
- Labour DayMon, Sep 1
- National Day for Truth and ReconciliationTue, Sep 30
🇯🇵 Japan holidays 2031
- Respect for the Aged DayMon, Sep 15
- Autumnal Equinox DayTue, Sep 23
🇧🇷 Brazil holidays 2031
- Independence DaySun, Sep 7
September 2031 FAQ
How many working days are in September 2031?
September 2031 has 21 working days (Monday–Friday, excluding US federal holidays) out of 30 days, with 8 weekend days.
What holidays are in September 2031?
US federal holidays in September 2031: Labor Day (Mon, Sep 1).
What day of the week does September 2031 start on?
September 1, 2031 is a Monday, and September 30 is a Tuesday. The month covers ISO weeks 36–40.
Make a Printable September 2031 Calendar
Opens the builder on September 2031 so you can add your own events and notes, then export a PDF. Want a ready-made look? Start from a monthly calendar template.
Customize September 2031