| 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 |
| 26 Mar, 2023 (Sun) | Daylight Saving Time starts | Clock change/Daylight Saving Time |
| 7 Apr, 2023 (Fri) | Good Friday | Public Holiday |
| 10 Apr, 2023 (Mon) | Easter Monday | Public Holiday |
| 1 May, 2023 (Mon) | May Day | Public Holiday |
| 6 May, 2023 (Sat) | The Coronation of King Charles III | Observance |
| 8 May, 2023 (Mon) | Bank Holiday for the Coronation of King Charles III | Public Holiday |
| 9 May, 2023 (Tue) | Liberation Day (except Alderney and Sark) | Common local holiday |
| 10 May, 2023 (Wed) | Liberation Day (only Sark) | Common local holiday |
| 29 May, 2023 (Mon) | Spring Bank Holiday | Public Holiday |
| 21 Jun, 2023 (Wed) | June Solstice | Season |
| 7 Aug, 2023 (Mon) | Summer Bank Holiday (only Alderney) | Common local holiday |
| 28 Aug, 2023 (Mon) | Summer Bank Holiday (except Alderney) | Common local holiday |
| 23 Sep, 2023 (Sat) | September Equinox | Season |
| 29 Oct, 2023 (Sun) | Daylight Saving Time ends | Clock change/Daylight Saving Time |
| 15 Dec, 2023 (Fri) | Homecoming Day (only Alderney) | Common local holiday |
| 22 Dec, 2023 (Fri) | December Solstice | Season |
| 25 Dec, 2023 (Mon) | Christmas Day | Public Holiday |
| 26 Dec, 2023 (Tue) | Boxing Day | Public Holiday |
