France has the most official time zones when its overseas territories are counted.
France spans 12 standard time zones because its territory includes islands and regions distributed across the Atlantic, Caribbean, South America, Indian Ocean, and Pacific Ocean. During part of the year, daylight-saving changes can give France 13 different local times in use.
Metropolitan France uses Central European Time in winter and Central European Summer Time in summer. French Guiana, Réunion, New Caledonia, French Polynesia, and other overseas territories use different time standards based on their geographic locations.
Russia has the most time zones across one continuous mainland country, with 11. The United States and Canada also have many zones because of their large territories and outlying regions. The answer therefore depends on whether overseas territories are included; under that common international count, France leads.