1883
Time zones invented, in part because of the railroad, to avoid crashes in the US. The train time becomes the time that the train leaves its stop. Eventually, a standardized time is chosen, just 4 minutes later than NY time, announced Sunday November 18th, from the naval outpost, 4 minutes after the church bells rang.
Current proposal- universal time, based on Greenwich time, as is used in the air when crossing time zones
