# September 2027 calendar

URL: https://gocutline.com/calendar/september-2027/

September 2027 starts on a Wednesday and ends on a Thursday. It has 30 days and 22 weekdays, and runs from ISO week 35 to week 39.

## September 2027 at a glance
| Week | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|---|
| 35 |  |  | 1 | 2 | 3 | 4 | 5 |
| 36 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 37 | 13 | 14 | 15 | 16 | 17 | 18 | 19 |
| 38 | 20 | 21 | 22 | 23 | 24 | 25 | 26 |
| 39 | 27 | 28 | 29 | 30 |  |  |  |

Weeks are ISO weeks, starting on Monday. Print this page for a clean one-month calendar.

## The numbers
| | September 2027 |
|---|---|
| First day | Wednesday |
| Last day | Thursday |
| Days | 30 |
| Weekdays, Monday to Friday | 22 |
| Weeks | 35 to 39 |

## Public holidays in September 2027
- **Sep 6, Monday: Labor Day** ([Canada](https://gocutline.com/holidays/canada-2027/), [United States](https://gocutline.com/holidays/united-states-2027/))
- **Sep 7, Tuesday: Independence Day** ([Brazil](https://gocutline.com/holidays/brazil-2027/))
- **Sep 20, Monday: Respect for the Aged Day** ([Japan](https://gocutline.com/holidays/japan-2027/))
- **Sep 23, Thursday: Autumnal Equinox Day** ([Japan](https://gocutline.com/holidays/japan-2027/))
- **Sep 24, Friday: Heritage Day** ([South Africa](https://gocutline.com/holidays/south-africa-2027/))

Other countries are in the [public holidays list](https://gocutline.com/holidays/).

## Planning September
The real start of the working year for many people. New routines stick best here: pick a time for training and for deep work and repeat it.

Block it in [your week in Cutline](https://gocutline.com/#try), or start from a [weekly template](https://gocutline.com/templates/).

## Questions

**How many working days are there in September 2027?**
September 2027 has 22 weekdays, before public holidays. The number of working days in your country is on its [public holidays page](https://gocutline.com/holidays/).

**What week number does September 2027 start in?**
September 2027 starts in ISO week 35.

---
Cutline: Cutline is a weekly calendar and planner that turns time blocks into XP, levels and streaks. You plan your week in blocks, tick each one off when it is done, and see your progress on a social feed (the Floor) and a weekly leaderboard (the Arena). Planning and budgeting are free; paid plans add a badge, posting, messaging, shared calendars and lower selling fees, from $9 a month. Pro is free to try for 7 days.
Facts: https://gocutline.com/facts/ · Updated 2026-11-06