Longest Day 2024 Australian Calendar. (it can change a day from this date from year to year.) from then on, the. Calendar for the year 2024 with national, state, territory, religious holidays and observances celebrated in australia.

The summer solstic arrives in australia on saturday, december 21, 2024, marking the longest period of daylight in the southern hemisphere. It also lists astronomical sunrise and sunset timings on summer solstice.