Environment
2:37 pm
Thu December 22, 2011

More daylight starting tomorrow, happy solstice!

Today is the winter solstice, the shortest day of the year.

The BBC reports that "more than 1,000 people" gathered at Stonehenge in Wiltshire County, England to mark the occasion.

And Arch druid Rollo Maughfling remarked  "the solstice celebration had been 'a very jolly occasion.'"

So in Ann Arbor, the sunset tonight is at 5:05 p.m... tomorrow night it will come at 5:06 p.m.

But weirdly, the winter solstice does not coincide with earliest sunset times.

Justin Grieser explains why in the Washington Post. Grieser says it has to do with the sun's declination and the shifting time of solar noon:

In late November, the effect of a later-shifting solar noon begins to counteract the effect that the sun’s lowering declination has on pushing sunset earlier. Eventually, sunset reaches a minimum during the first week of December. While we would expect the earliest sunset to occur closer to the winter solstice, the rapid forward shift in solar noon causes sunset to creep later more than a week before then.