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    Re: September Equinox computation
    From: Robert Eno
    Date: 2002 Sep 24, 13:29 +0100

    There are several methods that can be used. Most recently, I used my
    nautical almanac and was able to pin it down to the nearest minute. I
    don't know if that is precise enough for your purposes.
    Essentially you go to the nearest hour to when the sun's declination is
    close to zero, note the "v" increment (in this case it is 1.0) then go to
    the back of the almanac and scroll through tables until the correction for
    the "V" increment takes the declination down to precisely zero. If my
    memory serves me right, I believe equinox occurred on 23 September at
    04:52 GMT.
    I may have fumbled the explanation somewhat because I do not have my
    nautical almanac in front of me.
    Rest assured that you will get lots of answers from this forum!
    >Which method would you use to PRECISELY compute (hh-mm-ss) the September
    >Pierre Boucher
    >                X
    >              XX X                                 Pierre Boucher N
    >            XXX XX               formation en navigation de plaisance
    >          XXXX XXX                 Ste-Therese (Quebec) Canada
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    >      XXXXXX XXX          la "VOILE"...  le reste n'est que du vent...
    >  XXXXXXXXXXXXXX       ''Sail, Sail !''... the rest is only wind
    >            XXXX                      EMAIL: pboucher@lavoile.com
    >            XXX                               "http://www.lavoile.com"
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