The de facto equinox

Tuesday 26 September 2006 06:47 CDT   David Braverman
AstronomyWeather

If you live in the Northern Hemisphere, today is the first day since March 17th with less day than night. Yes, Friday was the autumnal equinox, when the earth's axis was perpendicular to its orbital plane. But because the atmosphere refracts the sun's light about 0.85°, days are always just a little longer than nights on equinoxes.

You can get sunrise and sunset information for your location at Weather Now.

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