What are time zones?

Adsense Pub

Each of the 24 parties that is arbitrarily divided the earth's surface, to define and unify the country's legal time is called time zone. The spindles used as reference the Greenwich meridian. Each spindle has a central meridian and each of them is separated from the next by a length of 15 degrees. In any area of each zone, the time for the local time of central meridian, which is obtained by adding or removing at the time of Greenwich Mean Time (Universal Time) a number of hours depends on the spindle. For example, when the 12 in Greenwich are 13 in Italy, which is located in the contiguous zone, while in Chile are the seven, since this country is five time zones west of Greenwich, and therefore subtracted the number of hours.

Are the spindles may appear distorted?

In several countries tried to unify the official time for the entire territory, although according to time zones have differences in some of their areas. In these cases, the limits of the deformed zones, which, on the other hand, are arbitrary.

Can official hours vary within a country?

Yes. If the territory of a state is very long from east to west may have several official hours. For example, Brazil has two official hours, while Russia has eleven, and Canada and the United States, four.

  1. What is birth control?
  2. Margaret Sanger began publishing in 1914, in New York, a magazine called
  3. biology/what-is-birth-control.htm
  4. What is krill?
  5. Krill is a small sea creature, up to 70 mm in length,
  6. biology/what-is-krill.htm
  7. How the nervous system is made?
  8. The nervous system consists of a set of bodies to coordinate the
  9. biology/how-the-nervous-system-is-made.htm
  10. What is democracy?
  11. The lawyers that deal with the political right believe that one of
  12. sociology/what-is-democracy.htm
  13. What is a biopsy?
  14. A biopsy is the removal and microscopic examination of tissue from a
  15. medicine/what-is-a-biopsy.htm