September 15: National Days, Holidays & Observances
September 15 is day 258 of the year, with 107 days left until the year ends. In 2027 it falls on a Wednesday. There are 2 observances on this date.
International Day of Democracy
International Day of Democracy 2026: History, Theme, Activities, Celebration. September 15 is International Democracy Day that gives us the chance to celebrate…
Mid-Autumn Festival
The festival is primarily observed in Chinese and Vietnamese communities, is also known as the Moon Festival and the Harvest Moon Festival.
Public holidays around the world
- Chuseok 🇰🇷South Korea