| 1 Jan, 2023 (Sun) | New Year's Day | Public Holiday |
| 2 Jan, 2023 (Mon) | Day off for New Year's Day | Public Holiday |
| 21 Mar, 2023 (Tue) | March Equinox | Season |
| 7 Apr, 2023 (Fri) | Good Friday | Public Holiday |
| 10 Apr, 2023 (Mon) | Easter Monday | Public Holiday |
| 25 Apr, 2023 (Tue) | ANZAC Day | Public Holiday |
| 4 Jun, 2023 (Sun) | Emancipation Day | Public Holiday |
| 5 Jun, 2023 (Mon) | Day off for Emancipation Day | Public Holiday |
| 22 Jun, 2023 (Thu) | June Solstice | Season |
| 4 Jul, 2023 (Tue) | Birthday of His Majesty King Tupou VI | Public Holiday |
| 17 Sep, 2023 (Sun) | Birthday of Crown Prince Tupouto'a-'Ulukalala | Public Holiday |
| 18 Sep, 2023 (Mon) | Day off for Birthday of Crown Prince Tupouto'a-'Ulukalala | Public Holiday |
| 24 Sep, 2023 (Sun) | September Equinox | Season |
| 4 Nov, 2023 (Sat) | Constitution Day | Public Holiday |
| 6 Nov, 2023 (Mon) | Day off for Constitution Day | Public Holiday |
| 4 Dec, 2023 (Mon) | Anniversary of the Coronation of King Tupou I | Public Holiday |
| 22 Dec, 2023 (Fri) | December Solstice | Season |
| 25 Dec, 2023 (Mon) | Christmas Day | Public Holiday |
| 26 Dec, 2023 (Tue) | Boxing Day | Public Holiday |
