| December | |
| 1 | World AIDS Day |
| 2 | International Day for the Abolition of Slavery |
| 3 | Advent begins (Western Christianity) |
| 3 | International Day of People with Disabilities |
| 8 | Hanukkah (Judaism) |
| 8 | Bodhi Day (Buddhism) |
| 9 | International Anti-Corruption Day |
| 10 | 16 Days of Activism against Gender Violence - ends |
| 10 | Human Rights Day |
| 15 | Chocolate and Coffee Day for Religious Harmony | Anniversary: Lindt Café siege, Sydney 2014 |
| 15 | Hanukkah ends (Judaism) |
| 18 | International Migrant's Day |
| 20 | International Human Solidarity Day |
| 25 | Christmas Day - Feast of the Nativity (Western Christianity) |
| January 2024 | |
| 1 | New Year's Day |
| 6 | Epiphany (Christianity) |
| 7 | Nativity (Orthodox Christianity) |
