Possible OLD GPS Errors, April, 2019

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Jim Wagner
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Joined: December 2nd, 2013, 7:52 pm

Possible OLD GPS Errors, April, 2019

Post by Jim Wagner » March 24th, 2019, 12:19 pm

This might be old news, but not seeing any discussion here, it may be worth posting.

If you have a REALLY old GPS (say year 2000 or earlier), there can be major problems with time keeping as of April 6, 2019.

For the somewhat snarky general explanation, see:

https://www.theregister.co.uk/2019/02/1 ... poch_ends/

For the official, somewhat technical, US Naval Observatory explanation, see:

https://www.gps.gov/cgsic/meetings/2017/powers.pdf

Cheers and great hiking!

Jim Wagner

Jim Wagner
Posts: 35
Joined: December 2nd, 2013, 7:52 pm

Re: Possible OLD GPS Errors, April, 2019

Post by Jim Wagner » March 24th, 2019, 10:08 pm

Should add that the potential time error can lead to significant position errors.

Jim

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retired jerry
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Re: Possible OLD GPS Errors, April, 2019

Post by retired jerry » March 25th, 2019, 4:38 am

thanks for the info

so, on April 6, 2019, if you have an old GPS, it may start getting large position errors

I will check mine after April 6 just to make sure

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aiwetir
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Re: Possible OLD GPS Errors, April, 2019

Post by aiwetir » April 6th, 2019, 5:10 pm

All of mine survived. I have one made in about 2000. It just has a daylight savings error since we changed that somewhat recently. I can manually adjust DST though.
- Michael

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