(Traveling east from the prime meridian, you gain an hour with each time zone journeying west, time moves backward by an hour with each zone. HawaiiAleutian Time Zone Alaska Time Zone Contiguous USA Time Zones Pacific Time Zone (PT) Mountain Time Zone (MT) Central Time Zone (CT) Central Standard. In 1884, delegates from more than two dozen nations met at the International Meridian Conference, held in Washington, D.C., where they chose the line of longitude running through the Royal Observatory in Greenwich, England, as the official prime meridian, or zero point of longitude. By the mid-20th century, most of the world had adopted a system of international time zones, in which the planet is divided into 24 zones spaced at intervals of approximately 15 degrees of longitude. The railroad industry’s plan was adopted by much of the country, although the time-zone system didn’t become official across the United States until the passage of the 1918 Standard Time Act, which also established daylight saving time. This time is also known as Universal Time (. To convert EST to CST, you have to subtract one hour. By convention, weather scientists use the twenty four hour clock, and use one time zone, Greenwich Mean Time (GMT). Converting Eastern Time to Other US Time Zones Eastern Standard Time (EST) is 1 hour ahead of Central Standard Time (CST).
Within each zone, all clocks were synchronized. Most North American time zones also have generic terms, including Pacific Time (PT), Mountain Time (MT), Central Time (CT), and Atlantic Time (AT). Thinking of heading to South America and are wondering what time it is where your headed Well South America is divided into 3 time zones.
On November 18, 1883, America’s railroads began using a standard time system involving four time zones, Eastern, Central, Mountain and Pacific.
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