Last Hours of Winter

We only have a few hours left of winter (or summer if you're down south of the equator). At 10:26 a.m. Pacific Time, the sun will pass over the equator from south to north, and we get to keep it till late September.

Today marks the day when the northward movement of the sun begins to slow. . . . Or does that sound a little too pessimistic? Oh well. I could take the derivatives of sines and cosines forever.