Calculations can also be done using local time once the expected time difference is known. The fact that time zones around the world are all calculated as an offset or difference from standard time makes it easy to know the time of a place by just knowing the time zone it falls in and the standard time at the current moment. Every place on Earth is measured either in degrees east or degrees west of this line. The Meridian, after which GMT is named, is used to represent 0 degrees longitude (although it is not truly 0 degrees). In 1847, the British railroads accepted GMT as a standard. GMT was the same as Universal Time up until 1972. To calculate the time zone an area theoretically falls in, the measurement of the area’s longitudinal coordinate is divided by 15. This means that, in the spring, a clock will go from 4:00 Standard Time to 5:00 DST. World Clocks are adjusted forward by one hour in the early spring and then set back by one hour in the autumn. Therefore, for half of the year some countries adjust their clocks by one hour. For instance, Saudi Arabia, which is 3 hours ahead of the UK, has a time zone of “GMT +3” and Colombia, which is 5 hours behind the UK, has a time zone of “GMT -5”.ĭaylight Savings Time (DST) is practiced in certain parts of the world in order to allow for more hours of daylight during the working day. The UK sets the standard for Greenwich Mean Time at “ GMT 0” and other countries can calculate their time zone in accordance with how many hours they are ahead of or behind the UK. There are 24 different time zones on earth to correlate with the 24 hours in each day and which are displayed in our time zone map here at World Clock. Time zones are regions of the earth divided by lines of longitude. However, there is no actual time difference between GMT and UTC and therefore the two can be used interchangeably. There are two standards by which a country’s time zone is categorized the older of the two standards is Greenwich Mean Time (GMT) and the more modern of the two standards is Coordinated Universal Time ( UTC). Whether you’re looking to book a flight, schedule an international teleconference, use our time zone converter or our time zone map and observe the trading hours of an overseas business, can show you the time in a matter of seconds. With incomparable time-telling precision, World Clock is the perfect point of reference for travelers and business people alike. It works from everywhere and all of your devices, whether you're on a desktop computer in your office or traveling with your smart phone, fully responsive and mobile provides accurate world time, statistics and weather in major cities across the world.International, email, military and other formats. Usefull information about time zone representations, usage and related time zones.View detailed Daylight Saving Time (DST), also known as Summer/Winter time, information about selected time zone and determine when exactly next time change will happen and how to adjust clocks forward or backwards.Displays local information with time zone geographical map, countries and major cities using it.Select you prefered time format between 12 hour am/pm or 24 hour notation.Table view for a quick at glance comparison, day and night highlights allows you to see in what regions the sun is still shining.Copy and paste time difference in one of the several text results in short or extended formats.Use permanent link that you can e-mail to clients or post on your Twitter profile or blog so that people can figure out at what local time your event is starting.It allows to compare time between cities and between time zones at once and without limits. You can pick and compare time zones or find and select major cities at you will. Quick and easy-to-use interface allows you to quickly determine time by comparing in multiple time zones at once. Quickly and effectively plan your abroad travel, vacation and sync flights schedule. Live stream a presentation with clients in different cities. Use it for games coordination, tv shows schedule, live events and more. Schedule and synchronize your online business meeting, teleconference, webinars and international phone calls. Start by searching and adding time zone, city or town in the search box aboveĮasy to use time zone converter allows to find the time difference between several time zones and cities around the world.
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