Longest Day Of Year 2025. 21, on the winter solstice. The longest day in australia is 24 hours long i.e.
Summer 2025 starts on friday, june 20th in the northern hemisphere, with the first day of summer being the longest daylight day of the year with the earth’s axis having reached. On december 21, 2024 โ the longest day of the year in the southern hemisphere โ people in sydney, australia, will experience 14 hours, 24 minutes, and 47 seconds of sunlight.