Longest Night Of The Year 2025. On december 21, 2025 — the longest day of the year in the southern hemisphere — people in sydney, australia, will experience 14 hours, 24 minutes, and 47 seconds of sunlight. The nomination is one of many bucket list items glaser has checked off amid her breakthrough year.

The good news is that if you start on the longest night of the year, the days. Saturn’s rings perform a vanishing act.