NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Leap second tonight
From: Lu Abel
Date: 2015 Jul 1, 15:36 +0000
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@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
