Public holidays
1661, Australia, South Australia
| # | Date | Public holiday |
|---|---|---|
| 1 | Saturday, 1 January 1661 | New Year's Day |
| Monday, 3 January 1661 | New Year's Day Observance | |
| 2 | Wednesday, 26 January 1661 | Australia Day |
| 3 | Monday, 14 March 1661 | Canberra Day/Adelaide Cup/Eight Hours Day/Labour Day |
| 4 | Friday, 15 April 1661 | Good Friday |
| 5 | Saturday, 16 April 1661 | Easter Saturday |
| 6 | Sunday, 17 April 1661 | Easter Sunday |
| 7 | Monday, 18 April 1661 | Easter Monday |
| 8 | Monday, 25 April 1661 | Anzac Day |
| 9 | Monday, 13 June 1661 | King's Birthday |
| 10 | Monday, 3 October 1661 | Labour Day/King's Birthday |
| 11 | Sunday, 25 December 1661 | Christmas Day |
| Monday, 26 December 1661 | Christmas Day Observance | |
| Tuesday, 27 December 1661 | Boxing Day Observance/Proclamation Day Observance |