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This Saturday, some of your GPS systems could start partying like it's 1999.
It's a scenario reminiscent of the panic that preceded the Y2K bug in late 1999. Older computer systems that rely on the 24 Global Positioning System, or GPS, satellites constantly orbiting the Earth could suddenly go 20 years out of date at 7:59 p.m. ET on Saturday.
Theoretically, that could cause not only some consumer navigation systems but also some critical infrastructure systems in communications, transportation, the power grid and the like to start spewing gibberish.
more @
https://www.nbcnews.com/tech/tech-news/y2k19-there-s-chance-your-gps-system-could-go-haywire-n991181?cid=par-xfinity_20190405