"If we had a cellular modem, we could get the time from the cell towers, which is broadcast through a protocol called NITZ. This is how phones auto-update when you enter a different timezone, but it's somewhat unreliable depending on the carrier, and overall worse than using GPS. And I really don't want my clock to have a sim card."
Just out of curiosity, what can you do with a cellular modem but no sim card? Can you get the time?
Just out of curiosity, what can you do with a cellular modem but no sim card? Can you get the time?