I've been cleaning my desk, putting away the detritus of study. Consequently the nearest books are on the bookshelf in the hallway...
"After the summer solstice, the Sun heads south and the days in the Northern Hemisphere grow shorter, until the Sun crosses the equator again on about September 23 -- the autumnal equinox -- the official beginning of autumn."
National Audobon Society: Field Guide to the Night Sky
"After the summer solstice, the Sun heads south and the days in the Northern Hemisphere grow shorter, until the Sun crosses the equator again on about September 23 -- the autumnal equinox -- the official beginning of autumn."
National Audobon Society: Field Guide to the Night Sky
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