Public holidays
1640, Australia, South Australia
| # | Date | Public holiday |
|---|---|---|
| 1 | Sunday, 1 January 1640 | New Year's Day |
| Monday, 2 January 1640 | New Year's Day Observance | |
| 2 | Thursday, 26 January 1640 | Australia Day |
| 3 | Monday, 12 March 1640 | Canberra Day/Adelaide Cup/Eight Hours Day/Labour Day |
| 4 | Friday, 6 April 1640 | Good Friday |
| 5 | Saturday, 7 April 1640 | Easter Saturday |
| 6 | Sunday, 8 April 1640 | Easter Sunday |
| 7 | Monday, 9 April 1640 | Easter Monday |
| 8 | Wednesday, 25 April 1640 | Anzac Day |
| 9 | Monday, 11 June 1640 | King's Birthday |
| 10 | Monday, 1 October 1640 | Labour Day/King's Birthday |
| 11 | Tuesday, 25 December 1640 | Christmas Day |
| 12 | Wednesday, 26 December 1640 | Boxing Day/Proclamation Day |