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
    or...
       
    Reply
    Re: Today's sub-Sun point
    From: Tony Oz
    Date: 2020 Mar 3, 00:18 -0800

    Steve, you asked...

    Why is it necessary to qualify the statement with … (West) of the sub-Sun point?

    This is because only in the range of 0°~180° of GHA coincides with the conventional latitude values. Further on (180°~360°) GHA enters the eastern latitudes which are counted in the opposite direction. There the latitude of sub-Sun point is 360°-GHA.

    Warm regards,
    Tony
    60°N 30°E

       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Join NavList

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

    You can also join by posting. Your first on-topic post automatically makes you a member.

    Posting Code

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

    Email Settings

    Posting 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