Thursday, September 21, 2006

Autumnal Equinox

Can it really only be coincidence that tomorrow is the autumnal equinox (i.e. when, more or less, daylight equals nighttime)as well as Rosh Hashanah, the day before Ramadan,and the first day of the A's final regular-season series against the Angels? Dunno, do you?

Anyway, this equality as to daylight and darkness is really an approximation since 1) the sun is a big ole disc, not a point, and 2) light bends in the atmosphere, and yada, yada. See:

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