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: Keep checking your GPS
    From: Don Seltzer
    Date: 2015 Feb 9, 14:41 -0500

    On Mon, Feb 9, 2015 at 1:31 PM, Bill B  wrote:
    
    >In accord with astronomical tradition, astronomers had always used Greenwich Mean
    > Astronomical Time (GMAT)--the same as GMT but with the day beginning at noon.
    
    To further complicate the issue, the Naval day also began at noon, but
    24 hours before the corresponding astronomical day.  That is, the
    naval day began 12 hours before the midnight start of the civil day,
    but the astronomical day began 12 hours after the start of the civil
    day.
    
    Don Seltzer
    

       
    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