How Do I Change My Time Zone On Youtube?
If y'all board a plane in New York at 3 p.chiliad. and caput west, you land in San Francisco at six:40 p.m. despite the fact that yous were in the air for almost seven hours. Equally you crossed the land, you went back in fourth dimension—or so it seems. In a way you did. During your flight, you went from ane time zone into another. To understand how this works, you need to know how to catechumen betwixt fourth dimension zones.
Understanding Time Zones
When people talk virtually time zones, they're referring to the fashion people conform the clock as they move toward or away from Coordinated Universal Time (UTC). Fourth dimension advances 1 hour for every xv degrees east yous movement from the Prime Elevation in Greenwich, London. Each one 60 minutes increment represents a time zone. When yous arrived in San Francisco at 6:xl p.grand., it was also 9:40 p.thou. on the New York time clock.
Why Did Countries Outset Using Time Zones?
Time zones are a relatively recent invention. People used to tell time by the position of the sun. Each community set the official clock at noon when the sun reached its highest spot in the sky. Equally a result, noon in Washington, D.C. took identify before noon in Chicago.
When people started using the railroad to travel and ship goods across the United states, they found local times confusing. Information technology was difficult to coordinate train schedules. The solution was to divide the land into four time zones: eastern, central, mountain and pacific. Within each region, all the clocks displayed the same fourth dimension.
Universal Coordinated Time
In 1884, representatives from select countries met at the International Elevation Conference in Washington, D.C. During the conference, the members decided to designate the line of longitude that passes through Greenwich, England, as the Prime number Meridian. This imaginary line became the standard for Coordinated Universal Time (UTC).
The world uses UTC to regulate clocks. Some people utilise the terms Coordinated Universal Time and Greenwich Mean Time (GMT) interchangeably, but they are non exactly the same. UTC is the time standard. GMT is a time zone that includes parts of Europe and Africa.
How Many Time Zones Are in the World?
Since in that location are 24 hours in a twenty-four hour period, information technology makes sense to have 24 time zones in the world. In that location are, however, more than than 30 fourth dimension zones across the world. Some of these time zones have increments of 30 minutes or 45 minutes, just almost of them stand for one hr.
Time zones don't follow a straight line from north to south. In some countries, the fourth dimension zone border follows the country's political edge. Other countries, similar China, have just one fourth dimension zone. If you lot await at a map of the world'southward fourth dimension zones, you see jagged lines where they suit to suit these countries.
Calculating Time Differences
Computing time differences is fairly simple and requires basic addition and subtraction. Y'all add every bit you motion east and subtract as yous move west. Eastern Standard Time is five time zones west of Greenwich Hateful Time, then yous subtract five hours from UTC to determine the fourth dimension in New York. Japan Standard Fourth dimension is nine time zones east of Greenwich Mean Time, so you add together nine hours to UTC to summate the time in Tokyo.
For example, if you're in Los Angeles and want to know what time information technology is in Paris, you count the number of fourth dimension zones between the two cities. There are 9 time zones between them. When it's one:00 p.m. in Los Angeles, information technology's 10:00 p.m. in Paris. The exception to this is a fourth dimension zone with a 30- or 45-minute increment.
Daylight Saving vs. Standard Fourth dimension
Benjamin Franklin came upwards with a programme to modify time on the clock and move it alee ane 60 minutes in the summer. This gave him an extra hr of natural light in the evening, and then he wasted less fuel on lighting. More than 100 years later, the U.s. adopted Daylight Saving Time as a way to conserve energy during World State of war I.
The United States isn't the simply country to observe Daylight Saving Fourth dimension. Well-nigh countries in North America, Europe and parts of South America and Australia switch to a course of Daylight Saving Fourth dimension during the summer. This also makes information technology more difficult to convert betwixt fourth dimension zones, and so many people apply a time zone computer when they need to know what time it is in another part of the world.
Source: https://www.questionsanswered.net/travel/how-to-convert-times-between-time-zones?utm_content=params%3Ao%3D740012%26ad%3DdirN%26qo%3DserpIndex
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