
It helps to make the daylight duration longer in summer by setting clock 1 hour forward in the spring (start of DST period) and setting them 1 hour backward in autumn when the DST period is over. The Daylight Saving Time (DST) is widely used in Europe and North America, and also in some parts of Africa, Australia, South America. 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. A number equivalent to almost 24 of the world population.
LIST OF TIME ZONES FULL
Following full name list is supported: ACT. The situation is the same in the United Kingdom, Denmark, New Zealand, Netherlands. List of time zones by country sorted by number of current time zones in the world List of UTC time offsets current UTC offsets List of time zone. The time zone covering the largest population is UTC+8, covering around 1.7 billion people worldwide. Reference here to find out which timezones are supported in Opsgenie.

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. States Arkansas(AR), Central Standard Time (CST) California(CA), Pacific Standard Time (PST) Colorado(CO), Mountain Standard Time (MST) Connecticut(CT). All the observed world time zones are listed by country (or territory) in the table below.
