Don't you mean NTP? We've had this technology for years! If it's connected to the internet, it's a pretty fundamental piece of pretty much any networked OS. You can ensure correct time this way.
If you have a datacenter full of computers, obviously you don't want to run a separate GPS antenna for every system. NTP allows systems to synchronize to GPS over a network.
Don't you mean NTP? We've had this technology for years! If it's connected to the internet, it's a pretty fundamental piece of pretty much any networked OS. You can ensure correct time this way.