Shortest Day 2024 Uk. The december solstice (winter solstice) in great britain is at 9:20 am on saturday, december 21, 2024. The shortest day lasts 7 hours 49 minutes and 42 seconds in london.

So, astronomically, the winter season won’t start until then. For those in the northern hemisphere, saturday, december 21, will mark the shortest day and longest night of the year.