The shortest day of the year is Thursday December 21st 2017. I'm an optimist so I like to look at it as tonight is the longest night of the year. You have the most time to do all of your evening activities. Like watching Christmas movies or sleeping! The further North you go the more evident it becomes. Some areas of Scandinavia celebrate the event with a 12 day celebration called Yule. The official time for the solstice is 16:28 GMT and the sun is directly over the Tropic of Capricorn.