| Date | Weekday | Event | Country | Type |
|---|---|---|---|---|
| 21 May | Sunday | Navy Day |
Chile More... |
Public |
| 21 May | Sunday | Discovery Day |
Cayman Islands More... |
Public |
| 21 May | Sunday | Independence Day |
Montenegro More... |
Public |
| 21 May | Sunday | Abolition Day |
Saint Martin More... |
Public |
| 21 May | Sunday | Saint Helena Day |
Saint Helena, Ascension and Tristan da Cunha More... |
Public |
| 21 May | Sunday | Father's Day |
Tonga More... |
Not public |
| 21 May | Sunday | Sunday of Europe Day Weekend |
Ukraine More... |
Not public |