September 2025 calendar
View the complete September 2025 calendar with weekday layout, holiday context, and week numbers. Print it, subscribe to related calendars, or switch to holidays by country.
30 daysstarts Monday22 weekdays1 U.S. long weekend
September 2025
This month
Observances
On this day
Use this September 2025 calendar
Check dates fast
Use the interactive month view to inspect weekdays, weekends, week numbers, and date details without leaving the page.
Plan around holidays
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About September 2025
Month summary
September 2025 has 30 days, starts on Monday, and ends on Tuesday. It spans 5 calendar rows in this layout.
There are 22 weekdays and 8 weekend days. Quarter 3of 2025 falls in autumn for the Northern Hemisphere.
U.S. holiday outlook
U.S. federal holidays this month include Labor Day (Sep 1).
1 long weekend can be planned around observed Friday or Monday holidays.