| 1 Jan, 2023 (Sun) | New Year's Day | Public Holiday |
| 2 Jan, 2023 (Mon) | Day off for New Year's Day | Public Holiday |
| 26 Jan, 2023 (Thu) | Australia Day | Public Holiday |
| 21 Feb, 2023 (Tue) | Carnival / Shrove Tuesday / Pancake Day | Observance |
| 22 Feb, 2023 (Wed) | Ash Wednesday | Observance |
| 6 Mar, 2023 (Mon) | Foundation Day | Public Holiday |
| 21 Mar, 2023 (Tue) | March Equinox | Season |
| 2 Apr, 2023 (Sun) | Palm Sunday | Observance |
| 2 Apr, 2023 (Sun) | Daylight Saving Time ends | Clock change/Daylight Saving Time |
| 6 Apr, 2023 (Thu) | Maundy Thursday | Observance |
| 7 Apr, 2023 (Fri) | Good Friday | Public Holiday |
| 9 Apr, 2023 (Sun) | Easter Sunday | Observance |
| 10 Apr, 2023 (Mon) | Easter Monday | Public Holiday |
| 8 Jun, 2023 (Thu) | Bounty Day | Public Holiday |
| 12 Jun, 2023 (Mon) | Sovereign's Birthday | Public Holiday |
| 22 Jun, 2023 (Thu) | June Solstice | Season |
| 2 Jul, 2023 (Sun) | First Day of NAIDOC Week | Observance |
| 23 Sep, 2023 (Sat) | September Equinox | Season |
| 1 Oct, 2023 (Sun) | Daylight Saving Time starts | Clock change/Daylight Saving Time |
| 9 Oct, 2023 (Mon) | Norfolk Island Agricultural Show Day | Public Holiday |
| 29 Nov, 2023 (Wed) | Thanksgiving Day | Public Holiday |
| 22 Dec, 2023 (Fri) | December Solstice | Season |
| 24 Dec, 2023 (Sun) | Christmas Eve | Observance |
| 25 Dec, 2023 (Mon) | Christmas Day | Public Holiday |
| 26 Dec, 2023 (Tue) | Boxing Day | Public Holiday |
| 31 Dec, 2023 (Sun) | New Year's Eve | Observance |
