| USA | Date | Weekday |
|---|---|---|
| New Year’s Day | 1/1/2021 | Friday |
| Martin Luther King, Jr. Day | 1/18/2021 | Monday |
| George Washington’s Birthday | 2/15/2021 | Monday |
| Memorial Day | 5/31/2021 | Monday |
| Independence Day (in lieu) | 7/5/2021 | Monday |
| Labor Day | 9/6/2021 | Monday |
| Columbus Day | 10/11/2021 | Monday |
| Veterans Day | 11/11/2021 | Thursday |
| Thanksgiving Day | 11/25/2021 | Thursday |
| Christmas and New Year Holidays | 12/20/2021-01/02/2021 |
Bulgaria | Date | Weekday |
|---|---|---|
| New Year’s Day | 1/1/2021 | Friday |
| Liberation Day | 3/3/2021 | Wednesday |
| Orthodox Good Friday | 4/30/2021 | Friday |
| Orthodox Easter Monday | 5/3/2021 | Monday |
| Labour Day (in lieu) | 5/4/2021 | Tuesday |
| St. George Day (Day of Bulgarian Army) | 5/6/2021 | Thursday |
| Culture and Literacy Day | 5/24/2021 | Monday |
| Unification Day | 9/6/2021 | Monday |
| Independence Day | 9/22/2021 | Wednesday |
| Christmas Holidays | 12/24-28/2021 | Friday |
Ukraine | Date | Weekday |
|---|---|---|
| New Year’s Day | 1/1/2021 | Friday |
| Orthodox Christmas | 1/7/2021 | Thursday |
| Labour Day Holidays | 3/1-2/2021 | Monday/Tuesday |
| Woman’s day | 3/8/2021 | Monday |
| Orthodox Easter Monday | 5/3/2021 | Monday |
| Victory Day | 5/10/2021 | Monday |
| Orthodox Pentecost Day (in lieu) | 6/21/2021 | Monday |
| Constitution Day | 6/28/2021 | Monday |
| Independence Day | 8/24/2021 | Tuesday |
| Day of Defender | 10/14/2021 | Thursday |