**September has 30 days.**
Here's a breakdown of days in September:
- Total days: **30**
- Weekdays: **Monday to Sunday** (repeating 4-5 times depending on the starting day of the month)
- Notable dates (examples):
- September 1 (start of meteorological autumn in some regions)
- September 23 (autumnal equinox in the Northern Hemisphere)
*Note: The exact dates of holidays/events may vary by country or calendar year.*