On this day in 1883, time zones launched in the United States. Prior to the time every major city had a "noon stick" where the sun being overhead set the time for noon and time was extrapolated from there. Who cared if Boston was a few minutes earlier than New York when the two were days apart on horseback.
The railroads changed all that. And industry came together--albeit with heavy hand by the Vanderbilts--to solve the problem.
Think a problem today is too big for industry standards to solve? Check your watch.