That depends on whether you are thinking of contiguous continental time zones only or if you want to include all of the time zones in all of a country's overseas territories.
Russia has the most contiguous time zones. It has 10 contiguous zones between Finland and Alaska plus another time zone in Kaliningrad for a total of 11. The time in Russia's Antarctic research station is the same as the time in one of its contiguous time zones. Russia's time zones are...
That's like asking how many countries in the world have only one time zone. Most of the smaller nations are in only one time zone. France, Monaco, Spain, Italy, etc.
The Eastern time zone has the most out of all of them
The United States was the first country to establish the world time zone. The time zones were created in order for the railroads to standardize their schedules.
The only country that has the same time as India is Sri Lanka.
Portugal has the same time zone as Greenwich Mean Time (also known as Western European Time).
That's like asking how many countries in the world have only one time zone. Most of the smaller nations are in only one time zone. France, Monaco, Spain, Italy, etc.
The country located furthest behind the time zone is American Samoa.
The Eastern time zone has the most out of all of them
France a country in Europe covers around 12 time zones which is the maximum time zone a country has USA is second covering 11 time zones then its Russia having 9
Nautical time zones are each made up of 15 degrees. Terrestrial time zones, however vary from zone to zone and country to country.
So that the time in the country of that time zone doesn't change.
The time zone that is the most ahead of Greenwich Mean Time (GMT) is the Line Islands Time Zone, which is UTC14 hours.
The United States was the first country to establish the world time zone. The time zones were created in order for the railroads to standardize their schedules.
America the beautiful
The only country that has the same time as India is Sri Lanka.
Most cell phones do have a time zone converter. You can check what time zone it is in most of the big cities in the world and this can be very convenient at times.
England is in the first time zone. Greenwich mean time.