Public holidays
1820, Australia, South Australia
| # | Date | Public holiday |
|---|---|---|
| 1 | Saturday, 1 January 1820 | New Year's Day |
| Monday, 3 January 1820 | New Year's Day Observance | |
| 2 | Wednesday, 26 January 1820 | Australia Day |
| 3 | Monday, 13 March 1820 | Canberra Day/Adelaide Cup/Eight Hours Day/Labour Day |
| 4 | Friday, 31 March 1820 | Good Friday |
| 5 | Saturday, 1 April 1820 | Easter Saturday |
| 6 | Monday, 3 April 1820 | Easter Monday |
| 7 | Tuesday, 25 April 1820 | Anzac Day |
| 8 | Monday, 12 June 1820 | King's Birthday |
| 9 | Monday, 2 October 1820 | Labour Day/King's Birthday |
| 10 | Monday, 25 December 1820 | Christmas Day |
| 11 | Tuesday, 26 December 1820 | Boxing Day/Proclamation Day |