Based on the search results, there are several holidays being celebrated today, September 21, 2023. Here are some of them:
- International Day of Peace
- National Hug a Kevin Day
- National Cake Decorating Day
- World Mental Health Day
- World Homeless Day
- National Handbag Day
- National Face Your Fears Day
- Cuba Independence Day
- CuraƧao Day
- Fiji Day
Its worth noting that some of these holidays are observed annually on September 21, while others are observed on this date in 2023 specifically.