September 2026 Calendar
A printable September 2026 calendar with US federal holidays, moon phases and ISO week numbers. September 1 is a Tuesday. Download it as a PDF or change it in the calendar maker.
| Sun | Mon | Tue | Wed | Thu | Fri | Sat |
|---|---|---|---|---|---|---|
| 30 | 31 | 1 | 2 | 3 | 4Last Quarter | 5 |
| 6 | 7Labor Day | 8 | 9 | 10New Moon | 11 | 12 |
| 13 | 14 | 15 | 16 | 17 | 18First Quarter | 19 |
| 20 | 21 | 22 | 23 | 24 | 25 | 26Full Moon |
| 27 | 28 | 29 | 30 | 1 | 2 | 3 |
Updated by Khokhar Sab
What day does September 2026 start on?
September 1, 2026 is a Tuesday, and the month ends on Wednesday, September 30. It has 30 days: 22 weekdays and 8 weekend days. Tuesdays and Wednesdays occur five times. The first Monday is September 7. A grid with weeks starting on Sunday needs 5 rows.
| First day | Tuesday, September 1, 2026 |
|---|---|
| Last day | Wednesday, September 30, 2026 |
| Days | 30 (22 weekdays, 8 weekend days) |
| Rows on a Sunday-first calendar | 5 |
| Day of the year | September 1 is day 244 of 365 |
What holidays are in September 2026?
September 2026 has 1 federal holiday: Labor Day, Monday, September 7. Federal offices close on the holiday, or on the observed weekday when it lands on a weekend. The dates follow 5 U.S.C. 6103. The maker prints these names inside the day cells, and you can turn them off.
| Date | Name | Type |
|---|---|---|
| Monday, September 7 | Labor Day | Federal holiday |
Federal holidays follow 5 U.S.C. 6103 and the OPM holiday list. Common days are not federal holidays.
What are the moon phases in September 2026?
September 2026 has Last Quarter on September 4, New Moon on September 10, First Quarter on September 18 and Full Moon on September 26. Dates and times are in US Eastern Time, computed from Jean Meeus periodic terms. A phase near midnight can fall on the neighboring date in other time zones.
| Phase | Date | Time |
|---|---|---|
| Last Quarter | Friday, September 4 | 3:51 a.m. |
| New Moon | Thursday, September 10 | 11:26 p.m. |
| First Quarter | Friday, September 18 | 4:43 p.m. |
| Full Moon | Saturday, September 26 | 12:49 p.m. |
What week numbers are in September 2026?
September 2026 touches ISO weeks 36, 37, 38, 39 and 40. ISO weeks start on Monday, and week 1 is the week with the year's first Thursday. 2026 has 53 ISO weeks, and week 1 starts on Monday, December 29.
| Week | Monday | Sunday |
|---|---|---|
| 36 | Aug 31, 2026 | Sep 6, 2026 |
| 37 | Sep 7, 2026 | Sep 13, 2026 |
| 38 | Sep 14, 2026 | Sep 20, 2026 |
| 39 | Sep 21, 2026 | Sep 27, 2026 |
| 40 | Sep 28, 2026 | Oct 4, 2026 |
How many workdays are in September 2026?
September 2026 has 22 weekdays from Monday to Friday. 1 federal holiday closes federal offices on a weekday, which leaves 21 federal workdays. The other 8 days are Saturdays and Sundays. Private employers set their own holiday schedules, so check yours.
The federal workday count removes: Labor Day (Sep 7).
How do I print a September 2026 calendar?
Press Download PDF on this page for a September 2026 calendar on US Letter, or open the calendar maker to switch to A4, landscape, a different week start, notes lines, week numbers or your own photo. Print at 100 percent, not Fit to page.
For one week at a time, use the weekly calendar template. For the whole year, open the 2026 calendar.
More months in 2026
- January 2026
- February 2026
- March 2026
- April 2026
- May 2026
- June 2026
- July 2026
- August 2026
- October 2026
- November 2026
- December 2026
- Full 2026 calendar
Related tools
Where these dates come from
- US Office of Personnel Management: Federal Holidays: the federal holiday list and the Friday or Monday observed when a holiday falls on a weekend
- 5 U.S. Code section 6103: Holidays (Cornell Legal Information Institute): the statute behind the holiday dates
- Wikipedia: ISO week date: how ISO week numbers are counted