September 2027 Calendar
A printable September 2027 calendar with US federal holidays, moon phases and ISO week numbers. September 1 is a Wednesday. Download it as a PDF or change it in the calendar maker.
| Sun | Mon | Tue | Wed | Thu | Fri | Sat |
|---|---|---|---|---|---|---|
| 29 | 30 | 31 | 1 | 2 | 3 | 4 |
| 5 | 6Labor Day | 7First Quarter | 8 | 9 | 10 | 11 |
| 12 | 13 | 14 | 15Full Moon | 16 | 17 | 18 |
| 19 | 20 | 21 | 22 | 23Last Quarter | 24 | 25 |
| 26 | 27 | 28 | 29New Moon | 30 | 1 | 2 |
Updated by Khokhar Sab
What day does September 2027 start on?
September 1, 2027 is a Wednesday, and the month ends on Thursday, September 30. It has 30 days: 22 weekdays and 8 weekend days. Wednesdays and Thursdays occur five times. The first Monday is September 6. A grid with weeks starting on Sunday needs 5 rows.
| First day | Wednesday, September 1, 2027 |
|---|---|
| Last day | Thursday, September 30, 2027 |
| 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 2027?
September 2027 has 1 federal holiday: Labor Day, Monday, September 6. 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 6 | 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 2027?
September 2027 has First Quarter on September 7, Full Moon on September 15, Last Quarter on September 23 and New Moon on September 29. 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 |
|---|---|---|
| First Quarter | Tuesday, September 7 | 2:31 p.m. |
| Full Moon | Wednesday, September 15 | 7:03 p.m. |
| Last Quarter | Thursday, September 23 | 6:20 a.m. |
| New Moon | Wednesday, September 29 | 10:36 p.m. |
What week numbers are in September 2027?
September 2027 touches ISO weeks 35, 36, 37, 38 and 39. ISO weeks start on Monday, and week 1 is the week with the year's first Thursday. 2027 has 52 ISO weeks, and week 1 starts on Monday, January 4.
| Week | Monday | Sunday |
|---|---|---|
| 35 | Aug 30, 2027 | Sep 5, 2027 |
| 36 | Sep 6, 2027 | Sep 12, 2027 |
| 37 | Sep 13, 2027 | Sep 19, 2027 |
| 38 | Sep 20, 2027 | Sep 26, 2027 |
| 39 | Sep 27, 2027 | Oct 3, 2027 |
How many workdays are in September 2027?
September 2027 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 6).
How do I print a September 2027 calendar?
Press Download PDF on this page for a September 2027 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 2027 calendar.
More months in 2027
- January 2027
- February 2027
- March 2027
- April 2027
- May 2027
- June 2027
- July 2027
- August 2027
- Full 2027 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