Hello how may I help you? Hi, I have a question. Yes, go ahead please. How do time zones work? While I can offer information about differences between time zones, I'm not programmed to interpret how they work. How many time zones are in the USA? There are currently 4 time zones in the continental US. There are 6 if you include Hawaii and Alaska. Which time zone is New York City in? New York City is in the Eastern time zone Great thank you. You're welcome.