The sun both rises and sets later in the western parts of time zones, by about an hour at the extremes. If sunrise in Nashville, Tennessee, is 6:30 a.m., it’s about 7:30 a.m. in Amarillo, Texas.

Nine hours and 30 minutes ahead of New York. Five hours and 30 minutes ahead of London. Three hours and 30 minutes behind Tokyo. For more than a century, India’s clocks have officially fallen short of ...

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 ...

If you work with people in distant cities, keeping time zones in sync can be a challenge, as can keeping track of other countries’ holidays. But some versions of Microsoft Outlook can help. I work in ...