When Is The Winter Solstice 2025. For us in the northern hemisphere, the december solstice will mark the longest. The winter solstice 2025 will mark the longest night of the year in the northern hemisphere.

In 2022, the winter solstice happens at 4:48 p.m. As it’s the shortest day of the year, we’ll experience roughly 9 hours and 53 minutes of daylight in sydney, although this varies.