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A time zone is an area which observes a uniform standard time for legal, commercial and social purposes. Time zones tend to follow the boundaries between countries and their subdivisions instead of strictly following longitude, because it is convenient for areas in frequent communication to keep the same time.
- No DST in Most Countries
- DST Period Longest
- Time Zone Name Changes
- Time Difference from UTC
- Countries Switch Time Zones
- Time Change Without DST
More than 60% of the countries in the world use standard time all year. The remaining countries use DSTduring the summer months, generally setting clocks forward one hour from standard time.
The periods of standard time and DST are not equally long. The standard time period is often shorter than the DST period. In the US and Canada, for instance, the standard time period is only around 4.5 months. Most European countries are on standard time 5 months of the year and spend 7 months on DST. What is a time zone?
During DST, the local time zone name and abbreviationchanges, usually to include either “daylight” or “summer” in the time zone name. For example, New York's standard time is Eastern Standard Time (EST), which is 5 hours behind UTC (UTC–5). However, during DST, the city is on Eastern Daylight Time(EDT), which is 4 hours behind UTC (UTC–4). In day-t...
The local time within a time zone is defined by its offset (difference) from Coordinated Universal Time(UTC), the world's time standard. This offset is expressed as either UTC– or UTC+ and the number of hours. The standard time in a few countries and territories has a UTC offset of 30 or 45 minutesinstead of the usual hour. Interactive Time Zone Ma...
From time to time, countries decide to change their standard time. Some changes are for political reasons, like in North Korea. More common reasons are practical, for example facilitating trade with neighboring areas in Canada or to boost tourism in Mexico.
Instead of DST, some locations change their standard time back and forth every year. For example, the Antarctic research station Troll switches from Greenwich Mean Time (GMT) to Central European Summer Time(CEST), which are 2 hours apart. Topics: Time Zone, Timekeeping, Daylight Saving Time
Indian Standard Time (IST), sometimes also called India Standard Time, is the time zone observed throughout the Republic of India, with a time offset of UTC+05:30. India does not observe daylight saving time or other seasonal adjustments.
A time zone refers to any region where the same standard time is kept. Interactive Time Zone Map for current time zones worldwide.
Standard time is the synchronization of clocks within a geographical region to a single time standard, rather than a local mean time standard. Generally, standard time agrees with the local mean time at some meridian that passes through the region, often near the centre of the region.
India Standard Time (IST) is 5:30 hours ahead of Coordinated Universal Time (UTC). This time zone is in use during standard time in: Asia. India Standard Time is a half-hour time zone. Its local time differs by 30 minutes instead of the normal whole hour. See full time zone map.
3 days ago · Exact time now, time zone, time difference, sunrise/sunset time and key facts for India Standard Time (IST).
