At this time of year, people from the tropics to the poles really become aware of changes in the lengths of the days. Yesterday Chicago had 11 hours of daylight for the first time since October 18th; we get 12 hours of daylight less than three weeks from now. Tuesday the sun set at 5:30pm for the first time since standard time returned on November 5th; it sets at 7pm on March 16th.
From the solstice through February 1st we only get about one additional hour of daylight (though, because of the Earth's orbit, most of it comes in the evening). But the really dramatic changes are now: from February 20th to April 20th, we get 3 more hours of daylight—an average of 3 minutes per day. Plus, the second weekend of March puts us into Daylight Saving Time, so sunsets occur more than two hours later in April than in February.
A direct result of lengthening days is increasing temperatures. It turns out that summer temperatures don't predict winter temperatures at all, but winter temperatures predict summer temperatures quite well. With only 12 days of snow on the ground this year, the warmest winter since the 1920s has felt more like Raleigh, N.C., than Chicago. This means, of course, next summer will feel like Raleigh as well. I can't wait.