| March | |
| 1 | World Day of Prayer |
| 1 | St David's Day |
| 1 | Zero Discrimination Day |
| 3 | World Wildlife Day |
| 8 | International Women's Day |
| 11 | Ramadan begins (Islam) |
| 16 | National Close the Gap Day |
| 17 | St Patrick's Day |
| 18 | Great Lent (Orthodox Christian) |
| 18 | Global Recycling Day |
| 18-24 | National Harmony Week |
| 20 | New Raz (Bhai'i) |
| 21 | International Day for the Elimination of Racial Discrimination |
| 21 | Harmony Day |
| 22 | World Water Day |
| 24 | Palm Sunday (Christianity) |
| 24 | Purim (Judaism) |
| 24 | International Day for the Right to the Truth concerning Gross Human Rights Violations and for the Dignity of Victims |
| 25 | Holi (Hinduism) |
| 25 | Annunciation (Christianity) |
| 25 | International Day of Remembrance of Slavery Victims and the Transatlantic Slave Trade |
| 25 | Earth Hour |
| 28 | Holy Week begins (Christianity) |
| 29 | Good/Holy Friday (Christianity) |
| 31 | Easter (Christianity) |
| April | |
| 1 | Easter Monday (Christianity) |
| 7 | Daylight Savings Time ends |