September 23, 2023, is a Saturday. It is the 266th day of the year 2023 in the Gregorian calendar, and there are 99 days remaining until the end of the year. Here are some of the holidays and observances that fall on this day:

• National Singles Day
• International Day of Sign Languages
• Redhead Appreciation Day
• National Checkers Day
• Restless Legs Awareness Day
• Celebrate Bisexuality Day
• Dogs in Politics Day
• National Hunting and Fishing Day
• National Public Lands Day
• International Rabbit Day
• Autumnal Equinox
• Day of Slovenian Sport

These are just a few of the holidays and observances that fall on September 23, 2023.