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GPS protocol: The next week number rollover next year 
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Post GPS protocol: The next week number rollover next year
From https://ics-cert.us-cert.gov/sites/defa ... S_2019.pdf:

In the GPS protocol, the week number field is a ten bit value. So every 1024 weeks it will return to zero.

Week 0 is 5 January 1980. And 21 August 1999. And will be 6 April 2019.

So don't be surprised if your GPS will display the wrong date next year.

Edwin


12 April 18 9:31 am
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Joined: 12 May 05 7:58 pm
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Post Re: GPS protocol: The next week number rollover next year
Geepers! The geocaching community may well experience Y2K type hysteria on the lead up to April 6th next year!


12 April 18 7:45 pm
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Post Re: GPS protocol: The next week number rollover next year
MavEtJu wrote:
From https://ics-cert.us-cert.gov/sites/defa ... S_2019.pdf:

In the GPS protocol, the week number field is a ten bit value. So every 1024 weeks it will return to zero.

Week 0 is 5 January 1980. And 21 August 1999. And will be 6 April 2019.

Crikey. I use GPS a lot on sites for clock syncing. Might have to do some reading up :shock:


12 April 18 8:11 pm
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