In September 2025, there are 30 days in total. The month starts on Monday, September 1, 2025, and ends on Tuesday, September 30, 2025. September is the ninth month of the year in the Gregorian calendar and always has 30 days.
List of Days in September 2025
Here’s the complete list of days in September 2025:
Monday, September 1, 2025
Tuesday, September 2, 2025
Wednesday, September 3, 2025
Thursday, September 4, 2025
Friday, September 5, 2025
Saturday, September 6, 2025
Sunday, September 7, 2025
Monday, September 8, 2025
Tuesday, September 9, 2025
Wednesday, September 10, 2025
Thursday, September 11, 2025
Friday, September 12, 2025
Saturday, September 13, 2025
Sunday, September 14, 2025
Monday, September 15, 2025
Tuesday, September 16, 2025
Wednesday, September 17, 2025
Thursday, September 18, 2025
Friday, September 19, 2025
Saturday, September 20, 2025
Sunday, September 21, 2025
Monday, September 22, 2025
Tuesday, September 23, 2025
Wednesday, September 24, 2025
Thursday, September 25, 2025
Friday, September 26, 2025
Saturday, September 27, 2025
Sunday, September 28, 2025
Monday, September 29, 2025
Tuesday, September 30, 2025
Why Does September Have 30 Days?
The Gregorian calendar assigns 30 days to September. It follows August (31 days) and precedes October (31 days).
Key Dates in September 2025
- September 1 (Monday) – Labor Day (U.S.)
- September 22 (Monday) – First Day of Fall (Autumnal Equinox)
Need a Printable September 2025 Calendar?
You can download a free PDF calendar here for easy planning.
September 2025 has 30 days. Use the full date list above to stay organized!