09:21 GMT in the UK means that the Earth has reached its maximum tilt in its axis away from the Sun. Which also means that from now, the days will get progressively longer. If you’re growing tired of long nights and dark mornings, more daylight will be on the way in the weeks ahead!

Image from Getty images showing the position of the UK relative to the sun for both the winter and summer solstice based on the tilt of the Earth
Corvus

@adamprocter Oh Adam. Because I'm a bit of a jerk, I already unfollowed someone this morning because of an unnecessary mini lecture on the winter solstice. (In my defence it was 0430 and I hadn't had any coffee yet.)
I do enjoy following your various activities and interests so I'm not going to unfollow you as well but now I feel inconsistent and hypocritical. Good thing it will be brighter a little longer tomorrow.

Dr. Adam Procter @adamprocter