Here are some important national and international days in September 2024:
1. September 1st: Independence Day (Uzbekistan)
2. September 2nd: Independence Day (Vietnam)
3. September 6th: Defence Day (Pakistan)
4. September 7th: Independence Day (Brazil)
5. September 8th: Independence Day (North Macedonia)
6. September 9th: Independence Day (Tajikistan)
7. September 15th: Independence Day (Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua)
8. September 16th: Independence Day (Mexico, Papua New Guinea)
9. September 18th: Independence Day (Chile)
10. September 21st: Independence Day (Armenia, Belize, Malta)
11. September 22nd: Independence Day (Bulgaria, Mali)
12. September 23rd: Independence Day (Saudi Arabia)
13. September 24th: Heritage Day (South Africa)
14. September 26th: European Day of Languages
15. September 30th: Independence Day (Botswana)
These are just a few notable days; there may be others depending on specific countries or causes.