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| I-90 in South Dakota / Daveynin Flickr CC BY 2.0 |
There was a time in the United States that it was hard to know what time it was. Every town and city had their own time and it could be a completely different time just 5 miles away. This made it hard to make deliveries and railroad schedules, so finally the government decided it was time to do something. The first organized time zones in the United States were called railroad time, but this was still very confusing. Even as late as the 1970s, you could drive 100 miles and have to change your watch numerous times in parts of the country.
