GPS Week Number Rollover

Certified Good Poster™ 104 posts

Oct. 4, 2019, 9:37 a.m. Oct. 4, 2019, 9:37 a.m.

ICYMI, apparently there are a few Y2K scenarios happening regarding a 10 bit number being used to represent weeks for the Navstar satellite(s): rachelbythebay.com/w/2019/10/03/roll/

en.wikipedia.org/wiki/GPS_Week_Number_Rollover

Included for ease of read:

Quoted message:

Look out for the second 2019 GPS week number rollover
If you're a time nut, a GPS nut, or just paying attention to certain peculiar sources, you might have read that the GPS (Navstar, if you want to be particular about it) had a "Y2K" type situation happen earlier this year. There's a 10 bit number representing the week number, and for the second time since it launched, it rolled back around from 1023 to 0.
Yes, really.
Since it happened six months ago, you'd think that if you got through it, you're good to go, right? Heh, yeah, well, no, not so much.
It seems like nobody's really talking about this yet, but apparently, certain LTE chipsets have an OFFSET WEEK... and they haven't hit 1023 yet. Oh no. According to what I've managed to dig up, they're going to hit it 2019-11-02 at 23:59:42Z.
"Big deal", you might think. Well, think again. Do you have a car that has a GPS-driven nav system in it? Does it use one of these chipsets? If so, you might have about one more month of sanity and then it's probably going to lose its mind.
How do I know? I got a recall notice in the mail this afternoon.
Yes, my car needs to be patched. First smart TVs and now cars.
I've been able to find two reference points for this. There's this note and also at least one other site which seems sketchy so I won't link to it here.
What a mess.

I know hard works and crunch time usually prevails in these scenarios, but come onnnn man.

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MisterPookie

Swamp Thot Leader 460 posts

Oct. 4, 2019, 10:03 a.m. Oct. 4, 2019, 10:03 a.m.

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Get fucking wrecked, NOAA's weather buoys! NOMAD or bust!

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Aether

Swamp Thot Leader 1006 posts

Oct. 4, 2019, 7:13 p.m. Oct. 4, 2019, 7:13 p.m.

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I love to juxtaposition things like this with the fact that Einstein's theory of relativity was affirmed by GPS satellite time differences on account of gravitational time dilation and yet shit's gonna hit the fan not because we discovered a fundamental aspect of how our universe operates but because someone decided that 10 freaking bits were enough to store weeks and "surely no one will be using this in 1024 weeks".