Public holidays
1820, Slovenia
| # | Date | Public holiday |
|---|---|---|
| 1 | Saturday, 1 January 1820 | New Year's Day |
| 2 | Sunday, 2 January 1820 | New Year Holiday |
| 3 | Tuesday, 8 February 1820 | Preseren's Day |
| 4 | Sunday, 2 April 1820 | Easter |
| 5 | Monday, 3 April 1820 | Easter Monday |
| 6 | Thursday, 27 April 1820 | Resistance Day |
| 7 | Monday, 1 May 1820 | May Day |
| 8 | Tuesday, 2 May 1820 | May Day Holiday |
| 9 | Sunday, 21 May 1820 | Whitsunday |
| 10 | Sunday, 25 June 1820 | Statehood Day |
| 11 | Tuesday, 15 August 1820 | Assumption Day |
| 12 | Tuesday, 31 October 1820 | Reformation Day |
| 13 | Wednesday, 1 November 1820 | All Saints' Day |
| 14 | Monday, 25 December 1820 | Christmas Day |
| 15 | Tuesday, 26 December 1820 | Independence and Unity Day |