The Vault is Slate’s history blog. Like us on Facebook, follow us on Twitter @slatevault, and find us on Tumblr. Find out more about what this space is all about here. Between the advent of railway ...

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A person may take knowing the local time for granted, but an official review revealed that there is no single, accurate map showing the nation’s time zones and local observance of Daylight Saving Time ...

How many time zones are there in the United States? The U.S. has four standard time zones, but nine in total between Alaska, Hawaii and other territories, according to the Bureau of Transportation ...

North Carolina has observed Eastern Standard Time for nearly 80 years. But that didn’t stop the curious from wondering whether the state is one of the few that is in more than one time zone. On ...