It's December 21st, the winter solstice, and as fulfilment of my obligations as an astronomer under the Retrograde Mars Treaty of 1821, I must post a picture of an #analemma or the sun rising over a calendar circle to mark the #solstice.

The photo was taken in 1998-99 by Jack Fishburn at Bell Labs and is available under a CC BY-SA 3.0 license (https://creativecommons.org/licenses/by-sa/3.0/)