There are many types of clocks which do this,Often they give you the choice of the time zones you wish displayed.It's helpful for people who make phone calls overseas in particular.
Several of the watches listed can display dual time zones. One in particular, the Men's Nixon Insider Watch, has "digital world time access to 24 time zones and 30 cities".
Zulu
yes, because it is bigger, it goes through more time zones at once. LIke Russia is the biggest, and it has the most time zones.
Yes, Google Maps displays time zone information for different locations around the world, including the current time in those locations. This can be useful for planning appointments or scheduling calls across different time zones.
There are several time zones in the continental US. Eastern, Central, Mountain, Arizona, Pacific, and Alaska.
The United States has six main time zones: Eastern, Central, Mountain, Pacific, Alaska, and Hawaii-Aleutian. These time zones help coordinate activities across the country and account for the variations in daylight hours. Daylight Saving Time is also observed in most states, except for Arizona (excluding the Navajo Nation) and Hawaii.
The earth rotates on its axis once every twenty-four hours. It rotates toward the east, which is why eastern time zones experience sun rise before western time zones.
Divided the United States into time zones
If you mean time zones. There is one. Russia has 7 time zones.
There are several places in the world where you change time zones. Though you are not 'time travelling'.
there are 24 time zones
The Uttermost Co. Time Zones clock can handle up to eight time zones concurrently.