| Date | Weekday | Event | Country | Type |
|---|---|---|---|---|
| 21 Dec | Thursday | Turkish Language Education Day |
North Macedonia More... |
Not public |
| 21 Dec | Thursday | Sixth Day of Las Posadas |
Mexico More... |
Not public |
| 21 Dec | Thursday | Blue Christmas |
United States
|
Other |
| 21 Dec | Thursday | Yule |
Åland Islands , Germany , Denmark , Estonia , Finland , Faroe Islands , United Kingdom , Greenland , Ireland , Isle of Man , Iceland , Lithuania , Latvia , Norway , Sweden
|
Other |