Colombia
| Date | Weekday | Event | Country | Type |
|---|---|---|---|---|
| 20 Sep | Saturday | Valentine's Day | Colombia | Not public |
| 20 Sep | Saturday | Constitution Day | Nepal | Public |
| 20 Sep | Saturday | National Canal Conservation Day | Thailand | Not public |
| 20 Sep | Saturday | National Youth Day | Thailand | Not public |
| 20 Sep | Saturday | National CleanUp Day | United States | Not public |
| 20 Sep | Saturday | Batman Day | global | Other |
| 20 Sep | Saturday | Oktoberfest | global | Other |