7 Countries with the Most Time Zones 

12 time zones 

France has the most time zones in the world, with 12 different time zones spread across its overseas territories. These territories include French Polynesia, New Caledonia, Réunion, etc

France

11 time zones 

These time zones are spread across nine different federal districts, from Kaliningrad Oblast in the west to Chukotka Autonomous Okrug in the east 

Russia 

10 time zones 

These time zones range from UTC-10 in the Aleutian Islands and Hawaii-Aleutian Census Area to UTC-10 in the Hawaiian Islands. 

United States 

6 time zones 

These time zones range from UTC-3:30 in Newfoundland and Labrador to UTC-8 in Yukon. 

Canada 

5 time zones 

These time zones range from UTC+5 in Xinjiang to UTC+8 in Inner Mongolia. 

China 

4 time zones 

These time zones range from UTC-7 in Baja California to UTC-5 in Quintana Roo. 

Mexico 

4 time zones 

These time zones range from UTC-3 in Fernando de Noronha and the state of Roraima to UTC-5 in the state of Acre and the Amazon Time Zone. 

Brazil