The Daylight Saving Time (DST) is widely used in Europe and North America, and also in some parts of Africa, Australia, South America. World Time Zones by Country List, UTC (GMT) Standard, Worldwide List Time Zone names, codes and abbreviations for Standard Time and Daylight Saving Time (DST). The countries with multiple time zones in the mainland area (some of them also have the insular territories) are Russia, USA, Canada, Australia, Mexico, Brazil, Indonesia, Kazakhstan, Mongolia, the Democratic Republic of the Congo, Kiribati, Micronesia, Chile, Spain, Portugal, and Ecuador. Samoa, in contrast, has a time offset of UTC+13:00 Baker Island and Howland Island, on the other hand, have a negative offset of UTC-12:00. For example, the United States is in several time zones: Colorado is in UTC-07:00, while California, Nevada and Oregon are in UTC-08:00.
The IANA time zone identifier for UTC is UTC. It tells people by how many hours their time is offset from UTC. The western Caribbean uses it year round. In North America, it is observed in the Eastern Time Zone during standard time, and in the Central Time Zone during the other eight months (see Daylight saving time ). Other names: Universal Time Coordinated / Universal Coordinated Time. The situation is the same in the United Kingdom, Denmark, New Zealand, Netherlands. Coordinated Universal Time (UTC), UTC +0 UTC is 4 hours ahead of New York. UTC05:00 is an identifier for a time offset from UTC of 05:00. UTC / GMT is the basis for local times worldwide. There are independent states with multiple time zones, and the record-holder is France with 12 zones, but 11 of them are used in overseas areas and only one in the country's mainland. All the observed world time zones are listed by country (or territory) in the table below.