| Date | Weekday | Event | Country | Type |
|---|---|---|---|---|
| 17 Sep | Sunday | National Hero Day |
Angola More... |
Public |
| 17 Sep | Sunday | Second Day of the Jewish New Year |
Argentina More... |
Not public |
| 17 Sep | Sunday | Day of the Walloon Region |
Belgium More... |
Not public |
| 17 Sep | Sunday | Federal Day of Thanksgiving, Repentance and Prayer |
Switzerland More... |
Public |
| 17 Sep | Sunday | Second Day of Rosh Hashanah |
Israel More... |
Public |
| 17 Sep | Sunday | Sybirak's Day |
Poland More... |
Not public |
| 17 Sep | Sunday | The Day Russia Invaded Poland in 1939 |
Poland More... |
Not public |
| 17 Sep | Sunday | Birth of the Crown Prince |
Tonga More... |
Public |
| 17 Sep | Sunday | Citizenship Day |
United States More... |
Not public |