The first railway that adopted London time was the Great Western Railway. The North American railway system adopted a standard time decades later, in Many things have changed afterward and today using Central Standard Time is already common practice in various U. In order to travel in various time zones without confusion, people should understand the way different time zones work.
Also, this time zone is usually used in North America and Central America during standard time in fall and winter. The time zone spans from northern Canada in the south to Costa Rica near the Equator, an imaginary line around the middle of a planet that divides the earth as the North Pole and the South Pole. CDT works between mid-March and early November. Usually, people determine the time based on the Coordinated Universal Time and use UTC to convert to different time zones.
However, the process of determining the time for your destination places will et much easier if you remember the following things about the connection of CST and other major time zones:. Today online time zone tools are very useful to find out time whenever you want and wherever you are. In order to convert time correctly, first, you need to know the territories that are located in specific time zones.
The reason is that such big countries like the United States or Canada are located in more than one time zone. Therefore, different territories observe different times. Here is the entire list of territories that observe CST. How so? And remember that these two time zones are never used together.
In locations where DST is observed, the clocks change from local time to local time on the second Sunday in March. On the first Sunday in November, the clocks go from to Mexico has a slight change to this formula and changes their time on the first Sunday in April and the last Sunday in October.
Some of the border cities adopted the U. DST schedule after gaining approval from the government in The United States is composed of four separate time zones, which makes timing and scheduling for television broadcasts more complicated. In most cases, television networks will have two separate feeds that go to their owned-and-operated stations and affiliates.
The same process is true in the case of cable and satellite channels. This tape-delay is used for a variety of other purposes as well. For live broadcasts it is delayed seven seconds to account for possible profanity, bloopers, violence, or other things that would need to be censored.
This delay allows programs to air at the same time in different zones. A show that begins at 8 P. M on the east coast can also air at 8 P. M on the west coast through a tape-delay. The Mountain Time Zone complicates things further as it is sometimes given its own feed or a mixture of the east and west variations. M for Eastern and Pacific Time. It essentially removed an hour from the Monday through Saturday schedule, making it two hours, and three hours on Sundays. The United States territory of Guam presents an even larger complexity to the mix.
This area is located on the other side of the International Date Line. This imaginary line exists at a specific point on the Earth where one day becomes another because of time zone differences. Since Guam is on the other side of this line, United States broadcasting shows the day after they are shown in the mainland. In some cases, a fourth stream is used for the Central Time Zone. Before worldwide, legally mandated time zones were introduced, every town kept its own local time.
Today, time zones establish order and allow national and international systems to operate, but we have maintained a fragmented time map in large countries.
In the U. The Pacific Time Zone lies along the western coast of North America, reaching north from the lower 48 states of the U. The western border of the Central Time Zone begins at the northwestern edge of North Dakota and extends jaggedly down to the northwestern edge of Texas, while the eastern edge descends from Lake Michigan in Indiana down through Florida along the line of the Georgia-Alabama border. Central Time includes the entirety of one Canadian province and 10 U.
0コメント