September 2027 starts on a Wednesday and ends on a Thursday. It has 30 days, 22 weekdays and 21 working days after US federal holidays, across ISO weeks 35–39.
Holiday dates follow each holiday's official rule (federal holidays under 5 U.S.C. 6103, with weekend dates observed on the nearest weekday). See our sources.
Labor Day (Monday, Sep 6); Grandparents Day (Sunday, Sep 12); Fall (Thursday, Sep 23).
How many working days are in September 2027?
September 2027 has 22 weekdays (Monday to Friday). Taking out the US federal holidays observed on weekdays leaves 21 working days. Company and state holidays can lower that further.
What day of the week does September 2027 start on?
September 2027 starts on Wednesday, September 1, 2027 and ends on Thursday, September 30, 2027.
Which week numbers are in September 2027?
September 2027 runs from ISO week 35 to week 39. ISO weeks start on Monday, and week 1 is the week with the year's first Thursday.
