Well, it's the last Sunday in October and we know what that means. Yes, November is around the corner and there are just so many shopping days 'til Christmas, but what I am actually referring to is the fact that the dreaded end of Daylight Saving Time is upon us, that artificial movement by which we turn back the clock, gain an hour of sleep for one night, and then, alas, plunge ourselves into earlier darkness for the duration of the winter (unless you live in Arizona where this practice conceived by Benjamin Franklin is eschewed). I found this interesting history and explanation of DST which you might wish to peruse, especially if you need something to assuage the sudden panicked depression sweeping through you as you realize winter is truly near. Also, good ol' Widepedia has a very comprehensive entry here.
So, distressed by the coming of winter? Just remember that, even as the days become shorter and darker now, the days actually begin to grow longer soon enough, on the Winter Solstice. Also, the United States will be extending Daylight Savings Time in 2007 by two weeks, meaning that we will turn our clocks ahead one week earlier in the Spring of 2007, and turn them back the first week in November rather than the last week in October, thus increasing the number of weeks with longer daylight hours for fun in the sun.
So despair not, there is no constant in the Universe except change!