Welcome to the NavList Message Boards.


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

Compose Your Message

Add Images & Files
    Re: News from the mobile navigation world
    From: Brad Morris
    Date: 2012 Oct 3, 09:06 -0700

    There are various apps that are capable of setting your android cell phone time to a high degree of precision.  "Clock Sync" and "UTC Time" are two, there are others.

    The main problem with these is that you need to 'root' your phone, not a terrific idea IMHO. 

    The problem seems to be with permissions.  The folks who administer Android have denied time setting permissions to apps, in effect you only get time from the network.  The network time is indeed skewed.  My phone shows a -15.36 second delta from time.nist.gov  When you root your phone, you effectively circumvent that requirement, but also many others.  That's why rooting is to be avoided.

    Of course, this delta is just a watch error, something that can be adjusted for.  Simply correct for the delta in the sight reduction.  Knowing what the error is makes this a trivial exercise.  Many of the older forms even have an entry for watch error.

    Brad Morris

    On Oct 3, 2012 11:55 AM, "Alan S" <alan202@verizon.net> wrote:


    Notwithstanding the fact that I'm not a devote of the now ubiquitous cell phone, your comment on the time keeping capabilities of the "latest Android OS, being back to where we were 8 years ago", gives rise to the following question. Is this progress?
    NavList message boards and member settings: www.fer3.com/NavList
    Members may optionally receive posts by email.
    To cancel email delivery, send a message to NoMail[at]fer3.com

    Browse Files

    Drop Files


    What is NavList?

    Join NavList

    (please, no nicknames or handles)
    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 Settings

    Posting Code:

    Custom Index

    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