How many days in September 2027?

30 days

September 2027 runs from Wednesday the 1st to Thursday the 30th.

Calendar grid for 9/2027, weeks starting Sun
ISO week	Sun	Mon	Tue	Wed	Thu	Fri	Sat
35	29	30	31	1	2	3	4
36	5	6Labor Day	7	8	9	10	11Patriot Day
37	12National Grandparents Day	13	14	15	16	17	18
38	19	20	21	22	23Mabon	24	25
39	26	27	28	29	30	1	2

About September 2027

September 2027 has 30 days, of which 22 are weekdays and 8 fall at the weekend. Taking out the 1 federal holiday leaves 21 working days.