How many time zones across the united states?
No context provided
How many time zones are there across the continental United States?
4
No context provided
How many time zones are there across the United States, including all territories?
9
No context provided
How many times zones are there across all 50 United States?
6
Time in the United States
https://en.wikipedia.org/wiki/Time%20in%20the%20United%20States
Time in the United States, by law, is divided into nine standard time zones covering the states, territories and other US possessions, with most of the United States observing daylight saving time (DST) for approximately the spring, summer, and fall months.
Time in the United States
Four standard time zones for the continental United States were introduced at noon on November 18, 1883, in Chicago, IL, when the telegraph lines transmitted time signals to all major cities
Time in the United States
Time in the United States, by law, is divided into 9 standard time zones covering the states, territories and other US possessions, with most of the United States observing daylight saving time  for approximately the spring, summer, and fall months. 4 standard time zones for the continental United States were introduced at noon on November 18, 1883, in Chicago, IL. Across all 50 United States there are 6 time zones.