Welcome to the NavList Message Boards.


A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Position-Finding

Compose Your Message

Add Images & Files
    Re: Leap second tonight
    From: Lu Abel
    Date: 2015 Jul 1, 15:36 +0000
    I suspect it's how the internal time algorithms in your Garmin's software deal with suddenly discovering that the second after 7:59:59 is NOT 8:00:00.   Sadly, as anyone who uses software of any consequence often discovers, programmers are often not very good at dealing with corner conditions. 

    Although I could not do it last night, I have sat through previous leap seconds on time.gov .   That correctly displays 7:59:60 as the second after 7:59:59 on a leap-second event (US Eastern Daylight Time)

    From: Robin Stuart <NoReply_Stuart@fer3.com>
    To: luabel{at}ymail.com
    Sent: Wednesday, July 1, 2015 5:26 AM
    Subject: [NavList] Re: Leap second tonight

    From the eastern US I watched as my Garmin GPS showed 7:59:59 then flashed 8:00:00 which immediately changed back to 7:59:59 and on to 8:00:00 again.
    On a previous leap second  with an older Garmin model 6:59:59 (I was in Mexico at the time) persisted for 2 seconds. Different algorithm? Slower display?
    Robin Stuart

    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