According to EarthSky, the 2016 December solstice arrives on December 21, at 10:44 UTC. That’s 4:44 a.m. CST for the Central time zone in North America. For us in the Northern Hemisphere, the December solstice ushers in our shortest period of daylight and longest period of darkness for the year. And yet – if we consider the length of the day in another light – the longest days of the year come each year in December for the entire globe. When we say the longest days of the year come each year around the December solstice for the entire globe, we’re talking about day not as a period of daylight – but as the interval from one solar noon – or midday – to the next.