Welcome to the NavList Message Boards.

NavList:

A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

Compose Your Message

Message:αβγ
Message:abc
Add Images & Files
    Name or NavList Code:
    Email:
       
    Reply
    Re: September Equinox computation
    From: Pierre Boucher
    Date: 2002 Sep 24, 17:48 -0400

    >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.
    
     From 51 to 56 minutes included gives a v corr. of 0.9
    
    ... and from and within those (51 to 56 minutes), there are many pairs of
    GHA Sun and Aries that would give a 180d SH.
    
    Exemple 04-52-04 by Dan Allen works
    
    Thanks to all who contributed.
    
    Pierre Boucher
    **************************************************************************
                    X
                  XX X                                 Pierre Boucher N
                XXX XX               formation en navigation de plaisance
              XXXX XXX                 Ste-Therese (Quebec) Canada
            XXXXX XXX
          XXXXXX XXX          la "VOILE"...  le reste n'est que du vent...
      XXXXXXXXXXXXXX       ''Sail, Sail !''... the rest is only wind
      XXXXXXXXXXXX
                XXXX                      EMAIL: pboucher@lavoile.com
                XXX                               "http://www.lavoile.com"
    **************************************************************************
    
    
    

       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Get a NavList ID Code

    Name:
    (please, no nicknames or handles)
    Email:
    Do you want to receive all group messages by email?
    Yes No

    A NavList ID Code guarantees your identity in NavList posts and allows faster posting of messages.

    Retrieve a NavList ID Code

    Enter the email address associated with your NavList messages. Your NavList code will be emailed to you immediately.
    Email:

    Email Settings

    NavList ID Code:

    Custom Index

    Subject:
    Author:
    Start date: (yyyymm dd)
    End date: (yyyymm dd)

    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site