Download Forex Time Zone Clock
If you lot lath a aeroplane in New York at 3 p.m. and caput westward, you state in San Francisco at 6:40 p.m. despite the fact that you were in the air for almost 7 hours. As you crossed the state, you lot went dorsum in fourth dimension—or so it seems. In a way you did. During your flight, you lot went from one fourth dimension zone into some other. To understand how this works, you need to know how to catechumen between time zones.
Understanding Time Zones
When people talk about time zones, they're referring to the way people adjust the clock as they move toward or away from Coordinated Universal Time (UTC). Time advances one 60 minutes for every fifteen degrees east y'all motion from the Prime Top in Greenwich, London. Each one 60 minutes increment represents a fourth dimension zone. When you lot arrived in San Francisco at 6:40 p.g., information technology was also 9:40 p.chiliad. on the New York time clock.
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. As a consequence, noon in Washington, D.C. took identify earlier noon in Chicago.
When people started using the railroad to travel and send goods across the The states, they found local times confusing. Information technology was difficult to coordinate train schedules. The solution was to divide the country into four time zones: eastern, central, mountain and pacific. Within each region, all the clocks displayed the same time.
Universal Coordinated Time
In 1884, representatives from select countries met at the International Meridian Conference in Washington, D.C. During the briefing, 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 use the terms Coordinated Universal Fourth dimension and Greenwich Mean Fourth dimension (GMT) interchangeably, only they are not exactly the aforementioned. 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 there are 24 hours in a day, it makes sense to have 24 fourth dimension zones in the earth. In that location are, however, more than xxx time zones across the globe. Some of these time zones have increments of 30 minutes or 45 minutes, but most of them stand for one hour.
Time zones don't follow a direct line from north to south. In some countries, the fourth dimension zone border follows the country's political border. Other countries, like China, have merely one time zone. If you look at a map of the world's time zones, you see jagged lines where they arrange to adapt these countries.
Calculating Time Differences
Computing time differences is fairly elementary and requires basic addition and subtraction. You add together equally you move eastward and subtract as you move due west. Eastern Standard Time is five fourth dimension zones west of Greenwich Mean Time, so yous subtract five hours from UTC to determine the time in New York. Japan Standard Time is nine time zones east of Greenwich Mean Fourth dimension, so you add 9 hours to UTC to calculate the time in Tokyo.
For example, if you're in Los Angeles and want to know what time it is in Paris, yous count the number of time zones between the 2 cities. There are nine time zones between them. When information technology's 1:00 p.m. in Los Angeles, it's 10:00 p.m. in Paris. The exception to this is a fourth dimension zone with a xxx- or 45-infinitesimal increase.
Daylight Saving vs. Standard Time
Benjamin Franklin came upwards with a plan to modify time on the clock and movement it ahead i hr in the summer. This gave him an extra hour of natural lite in the evening, so he wasted less fuel on lighting. More than than 100 years later on, the United states of america adopted Daylight Saving Fourth dimension as a way to conserve free energy during Earth War I.
The United States isn't the but country to observe Daylight Saving Time. About countries in North America, Europe and parts of South America and Australia switch to a form of Daylight Saving Time during the summer. This also makes it more hard to convert between time zones, and so many people employ a time zone calculator when they need to know what fourth dimension 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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