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    Re: Henning Umland's programs?
    From: Peter Hakel
    Date: 2013 May 9, 06:12 -0700
    Samuel,

    In the sun.xls spreadsheet you can inspect the value of Delta T (in seconds) in cell B16, which comes from fits provided in:

    http://eclipse.gsfc.nasa.gov/SEhelp/deltatpoly2004.html

    that are encoded in columns J,K,L.  Additional details are at:

    https://en.wikipedia.org/wiki/Delta-T


    Peter Hakel



    From: Samuel <Look@ipadRing.net>
    To: pmh099@yahoo.com
    Sent: Thursday, May 9, 2013 5:32 AM
    Subject: [NavList] Re: Henning Umland's programs?


    Umland doesn't provide any information about what format you're to use when entering minute and seconds figures. I have no idea whether I'm to enter .5' or 30' to represent 30 minutes of angular measure (using his sun sight program you mentioned).

    He also will only reply, maybe, to help requests via fax. I kid you not!
    What is the delta T about in this program? http://www.celnav.de/longterm.htm
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