I always thought, (if I thought about it at all), that the Winter Solstice happened at mid-night on the 21st of December. But... it turns out that this year the Winter Solstice will occur on Wednesday, December 21st at 11:35 am MST. The winter solstice is defined as the point when the sun reaches its southern most latitude of the year and it reaches that spot on Wednesday morning.
Just thought you might find this interesting.... or not.
Mark