It is the shortest day of the year in the Northern Hemisphere. Here in the mid-Hudson Valley, we only have 9 hours and 39 minutes of time between sunrise and sunset. By New Year's Eve, we'll have 20 minutes more of daylight as the sun rises 8 minutes earlier and sets 12 minutes later.
I try to make it a point to be in tune with the sky. To notice the shortening and lengthening days, the movement of the Sun throughout the year, the changes in the constellations, and the phases of the Moon. The paper calendar we base our lives on is completely artificial but it's based, ultimately, on something real - the movements of the Earth and Moon in their orbits around a star. Something we can see and experience if we just look up and pay attention to the natural world around us.