September 2025 Calendar With Holidays Usa. L abor day 2025 will fall on monday, 2 september, marking the unofficial end of summer and heralding the start of fall.the annual holiday is more than 125 years old and was. States vary in when they send out.
Add these september holidays and observances to your calendar. The september 2025 monthly calendar includes week numbers and united states holidays for the month of september.