Public holidays
1644, Ukraine
| # | Date | Public holiday |
|---|---|---|
| 1 | Friday, 1 January 1644 | New Year's Day |
| 2 | Thursday, 7 January 1644 | Orthodox Christmas Day |
| 3 | Tuesday, 8 March 1644 | International Women's Day |
| 4 | Sunday, 1 May 1644 | Workers' Day |
| 5 | Monday, 2 May 1644 | Workers' Day |
| 6 | Wednesday, 4 May 1644 | Orthodox Easter |
| 7 | Thursday, 5 May 1644 | Orthodox Easter |
| 8 | Monday, 9 May 1644 | Memorial Day |
| 9 | Wednesday, 22 June 1644 | Orthodox Pentecost |
| 10 | Thursday, 23 June 1644 | Orthodox Pentecost |
| 11 | Tuesday, 28 June 1644 | Constitution Day |
| 12 | Wednesday, 24 August 1644 | Independence Day |