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Business Days

Business days in September 2025

How many working days are in September 2025? Count weekdays minus US federal holidays.

MetricCount
Total calendar days30
Weekdays (Mon–Fri)22
US federal holidays on weekdays1
Net business days21

Business days are weekdays (Monday through Friday) minus US federal holidays that fall on weekdays. Weekends (Saturday and Sunday) are never counted. For payroll deadlines, count only the net business days — 21 in September 2025.

Weekdays in September 2025

Every weekday (Monday–Friday) in September 2025. Rows highlighted in amber fall on a US federal holiday.

DateDayHoliday
Sep 1, 2025MondayLabor Day
Sep 2, 2025Tuesday
Sep 3, 2025Wednesday
Sep 4, 2025Thursday
Sep 5, 2025Friday
Sep 8, 2025Monday
Sep 9, 2025Tuesday
Sep 10, 2025Wednesday
Sep 11, 2025Thursday
Sep 12, 2025Friday
Sep 15, 2025Monday
Sep 16, 2025Tuesday
Sep 17, 2025Wednesday
Sep 18, 2025Thursday
Sep 19, 2025Friday
Sep 22, 2025Monday
Sep 23, 2025Tuesday
Sep 24, 2025Wednesday
Sep 25, 2025Thursday
Sep 26, 2025Friday
Sep 29, 2025Monday
Sep 30, 2025Tuesday
Disclaimer:Business day counts are based on US federal holidays and standard Monday–Friday working days. Observed dates may vary by employer or region. Always verify important payroll, legal, or contractual dates with the relevant authority.

Frequently asked questions

What counts as a business day?
A business day is any weekday (Monday through Friday) that is not a public holiday. Weekends (Saturday and Sunday) are never counted as business days.
Does this include state or local holidays?
No — this count only excludes US federal holidays. State, local and company-specific holidays are not deducted. Check with your employer for a complete list of observed holidays.
How do I count business days between two specific dates?
Use the Business Days with Holidays calculator to count working days between any two dates, with holidays from 30 countries.
How is the net business day count calculated?
Start with the total calendar days (30), subtract all weekend days (8), then subtract any US federal holidays that fall on a weekday (1). The result is 21 net business days.
How many weekends are in September 2025?
September 2025 has 8 weekend days (4 full weekends — 8 Saturdays and Sundays combined).