There are six time zones in the United States. They are Eastern, Central, Mountain, Pacific, Alaska, and Hawaii. The Eastern time zone is the most populous, and it covers the eastern part of the country. The Central time zone covers the central part of the country and its second-most populous. time zone.
The Mountain time zone (or the Mountain standard time zone) covers the western part of the country, as well as parts of the northeastern part. The Pacific and Alaska time zones cover smaller areas. Puerto Rico also has a time zone.
Conclusion: There are 24 time zones in the world. Arizona is in the Mountain Standard Time Zone. There are 11 time zones in the United States.