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September 2027 Calendar

September 2027 has 30 days, starts on a Wednesday, and has 22 working days (Mon–Fri).

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September 2027: 30 days. You only need one to start.

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September 2027 at a glance

Days in September
30
The 1st is a
Wednesday
Sundays this month
4
Saturdays this month
4
Business days
22
Week numbers
35, 36, 37, 38, 39
Moon phases
First quarter 2027-09-07 (approximate), Full moon 2027-09-15 (approximate), Last quarter 2027-09-23 (approximate), New moon 2027-09-30 (approximate)
Equinox
2027-09-23

September 2027: five Thursdays and an Irish Ryder Cup

Dispatch, September 2027: the month opened on Wednesday 1 September with 30 days and five Thursdays. The athletics world began in Beijing on Friday 10 September, under a moon filling towards full. The full moon arrived on Wednesday 15 September to light the middle weekend of the championships. It closes dark on the new moon of Thursday 30 September, with the equinox and an enormous golf match in between.

The month by numbers

September 2027 runs 30 days, from Wednesday 1 September to Thursday 30 September, across ISO weeks 35 to 39. Count 22 business days and eight weekend days, a solid working month by any measure. A midweek start means the first weekend waits until Saturday 4 and Sunday 5 September.

Five Wednesdays fall on 1, 8, 15, 22 and 29 September. Five Thursdays follow on 2, 9, 16, 23 and 30 September. The month begins and ends on the working spine of the week, which keeps it honest. Four Saturdays and four Sundays keep the weekends regular rather than lavish.

Sport on three fronts

Monza ended Formula 1's summer break, the race on Sunday 5 September. The New Simpsons Movie joined the weekend, in cinemas from Friday 3 September. The US Open tennis fortnight ends with finals weekend on 11 and 12 September in New York.

The World Athletics Championships run at Beijing's National Stadium from Friday 10 September to Sunday 19 September. The evening sessions there land at breakfast time in Europe, so the commute doubles as the highlights reel. Athletics followers become early risers for ten days.

The Ryder Cup comes to Ireland for the first time. The matches run from Friday 17 to Sunday 19 September at Adare Manor in County Limerick. Practice days come first, from Monday 13 September, and Limerick's rooms went long ago. The sensible visitors are based in Galway or Cork and commute.

The athletics finish on Sunday 19 September, the same day the Ryder Cup singles conclude in Limerick. One Sunday settles both seasons, from morning medals to evening singles.

Equinox and motorcades

The United Nations General Assembly opens its general debate on Tuesday 21 September. The week of speeches turns Manhattan into a motorcade maze. The equinox follows on Thursday 23 September, and the moon reaches last quarter on the same day. Days and nights split evenly, and the tilt takes over from there.

The lunar diary runs neatly: first quarter on Tuesday 7 September, full moon on Wednesday 15 September. Last quarter lands on Thursday 23 September, and the new moon closes the month on Thursday 30 September. The month ends in the dark, one week after the equinox.

September 2027 files itself neatly, week by working week, and closes on a new moon. After that much sport, a dark finish feels earned.

Frequently asked questions

When is the September 2027 equinox?
Thursday 23 September, and the moon reaches last quarter on the same day.
How many Wednesdays are there in September 2027?
Five, on 1, 8, 15, 22 and 29 September. Thursdays also manage five, ending on 30 September.
Where is the 2027 Ryder Cup held?
At Adare Manor in County Limerick, the first Ryder Cup staged in Ireland. The matches run from Friday 17 to Sunday 19 September.
How many weekdays does September 2027 have?
22, with eight weekend days, across weeks 35 to 39.

September 2027: 30 days. You only need one to start.

Start free, no credit card needed ↗