| USA | Date | Weekday |
|---|---|---|
| Martin Luther King, Jr. Day | 1/16/2023 | Monday |
| Memorial Day | 5/29/2023 | Monday |
| Independence Day | 7/4/2023 | Tuesday |
| Labor Day | 9/4/2023 | Monday |
| Veterans Day | 11/10/2023 | Friday |
| Thanksgiving Day | 11/23/2023 | Thursday |
| Christmas and New Year Holidays | 12/24/2023-1/2/2024 | Monday |
Bulgaria | Date | Weekday |
|---|---|---|
| New Year’s Day (in lieu) | 1/2/2023 | Monday |
| Liberation Day | 3/3/2023 | Friday |
| Orthodox Good Friday | 4/14/2023 | Friday |
| Orthodox Easter Monday | 4/17/2023 | Monday |
| Labor Day | 5/1/2023 | Monday |
| St. George Day (Day of Bulgarian Army) (in lieu) | 5/8/2023 | Monday |
| Culture and Literacy Day | 5/24/2023 | Wednesday |
| Unification Day | 9/6/2023 | Wednesday |
| Independence Day | 9/22/2023 | Friday |
| Christmas Holidays | 12/24-27/2023 | Wednesday |
Ukraine | Date | Weekday |
|---|---|---|
| New Year’s Day (in lieu) | 1/2/2023 | Monday |
| Orthodox Christmas Holiday | 1/9/2023 | Monday |
| Woman’s day | 3/8/2023 | Wednesday |
| Orthodox Easter Monday | 4/17/2023 | Monday |
| Labor Day (in lieu) | 5/1/2023 | Monday |
| Victory Day | 5/9/2023 | Tuesday |
| Orthodox With Monday | 6/5/2023 | Monday |
| Constitution Day | 6/28/2023 | Wednesday |
| Independence Day | 8/24/2023 | Thursday |
| Day of Defender (in lieu) | 10/16/2023 | Monday |
| Gregorian Christmas | 12/25/2023 | Monday |