I think this may be another WGN special. At least it looks like one.
I'm chiming in today to let you all know that tomorrow at 5:44am is the Winter Solstice. As we learned in class, that is the time at which Earth is exactly between the two equinoxes. This is also the start of the next thirteen weeks that are winter.
Enjoy! I say it would be a great day to sleep in, because it's going to be dark most of the day anyway!