My Michigan congressman Upton changed the timing of it a couple years ago. Sorry about that! I think it was Ben Franklin who originally came up with it here.
It used to be April & OCtober, now it is March & November. I like it, but I live on the western edge of our time zone, so the sun sets later here than in the northeast. So it is light here until 5, where in Chicago, being on the sunrise side of that zone, it gets dark at 4:00.