June 28 Holidays, events and History 2021.
| Date | Day | Holiday Name | Holiday Type | Country |
| 28 Jun | Monday | Independence Day Holiday | Public Holiday | Djibouti |
| 28 Jun | Monday | Saint Peter and Saint Paul | National holiday | Chile |
| 28 Jun | Monday | Constitution Day | National holiday | Ukraine |
| 28 Jun | Monday | Azerbaijan Armed Forces Day observed | Public holiday | Azerbaijan |