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Author Topic:   GPS Devices Might Stop Working This Weekend -- Week Number Rollover
Percy
Member
Posts: 22394
From: New Hampshire
Joined: 12-23-2000
Member Rating: 5.2


Message 2 of 22 (850199)
04-03-2019 10:27 AM
Reply to: Message 1 by dwise1
04-02-2019 8:21 PM


Interesting. I'll be at home Sunday night, so I set an alert to check my cell phone position.
--Percy

This message is a reply to:
 Message 1 by dwise1, posted 04-02-2019 8:21 PM dwise1 has replied

Replies to this message:
 Message 3 by dwise1, posted 04-03-2019 12:32 PM Percy has replied
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Percy
Member
Posts: 22394
From: New Hampshire
Joined: 12-23-2000
Member Rating: 5.2


Message 4 of 22 (850215)
04-03-2019 5:17 PM
Reply to: Message 3 by dwise1
04-03-2019 12:32 PM


dwise1 writes:
BTW, in New Hampshire (UTC-5) the rollover should happen at 7PM on Saturday, so you could check it then.
Oh, right, I misread - changing my alert...
--Percy

This message is a reply to:
 Message 3 by dwise1, posted 04-03-2019 12:32 PM dwise1 has not replied

  
Percy
Member
Posts: 22394
From: New Hampshire
Joined: 12-23-2000
Member Rating: 5.2


(1)
Message 10 of 22 (850475)
04-08-2019 5:16 PM
Reply to: Message 9 by dwise1
04-08-2019 2:34 PM


Re: An Odd Coincidence
One test you could try as part of a process of elimination is to toggle airplane mode again and see if that causes any connection problems with your car.
My phone still thinks it's where I think I am.
--Percy

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 Message 9 by dwise1, posted 04-08-2019 2:34 PM dwise1 has replied

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Percy
Member
Posts: 22394
From: New Hampshire
Joined: 12-23-2000
Member Rating: 5.2


(1)
Message 12 of 22 (850612)
04-11-2019 8:32 AM


A Failure in New York City
From the New York Times:
quote:
On April 6, something known as the GPS rollover, a cousin to the dreaded Y2K bug, mostly came and went,...But in New York, something went wrong...
At 7:59 p.m. E.D.T. on Saturday, the New York City Wireless Network, or NYCWiN, went dark,...
The culprit was a long-anticipated calendar reset of the centralized Global Positioning System, which connects to devices and computer networks around the world.
...
Ms. Raphael [Stephanie Raphael, Department of Information Technology and Telecommunications spokesperson] admitted that technicians have been unable to get the network back up and running, adding, “We’re working overtime to update the network and bring all of it back online.”
...
Approximately every 20 years, the GPS needs to reset the way it keeps track of weeks, and Saturday, April 6, was the date selected for the most recent reset. The reset also came with an improvement in timekeeping that means the next rollover will not be needed for about 157 years.
Maybe you already said, but what was the change that means the next rollover won't be for another 157 years?
--Percy

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Percy
Member
Posts: 22394
From: New Hampshire
Joined: 12-23-2000
Member Rating: 5.2


Message 16 of 22 (850626)
04-11-2019 10:57 AM
Reply to: Message 14 by dwise1
04-11-2019 10:20 AM


Re: A Failure in New York City
What makes me most curious is why the counter isn't a byte multiple. Why 10 bits then? Why 13 bits now? Why not 2 bytes now, providing over a thousand years? Perhaps they had to accept a solution that would work on the most memory-restricted reprogrammable device still out there? Just guessing.
--Percy

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 Message 17 by Stile, posted 04-11-2019 11:20 AM Percy has seen this message but not replied
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