I watch a DVD of the Hogfather.
The Winter Solstice is actually the shortest day of the year.
The winter solstice is on December 22nd. No actually December 21.
the winter solstice is when two days of the year, when the noon sun is farthest or south equator WINTER SOLSTICE OCCURS ON DECEMBER 21
On the equinoxes day and night are of equal duration. On the solstices the difference between day and night are their maximum (longest day for summer solstice ... shortest day for winter).