The International Date Line (IDL) is a line that separates the world into two hemispheres. It was first established in 1884 during the International Meridian Conference which was attended by 26 countries. It is located at the 180° longitude, which is the east of Greenwich, United Kingdom.
The International Date Line does not follow a straight line because it has to avoid countries or groups of islands. The main purpose of the zigzag pattern of the IDL is to avoid confusion regarding time.
The IDL is important because it's the basis for our time zones. Back in the nineteenth century, scientists as well other professionals in various industries proposed to adopt the 24 time zone system which centered on the IDL's principle of adopting the proper "time". The IDL divides the world into two dates: the East of the IDL is a day behind compared to the West of the IDL.
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Plate boundaries. Earthquakes and volcanic eruptions affect people all over the world. They are caused by the movement of tectonic plates. Tectonic hazards can destroy buildings, infrastructure and cause deaths.
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Measurement of atmospheric pressure
Determining the altitude of a place
Weather Forecasting
Calibration and checking of aneroid barometers
Application in Fluid Mechanics
Measurement of pressure in aircrafts
Surface Weather Analysis
Preparation of Barographs
Usage in Physical sciences like Physics, Astronomy & Chemistry
Preparation of aircraft altimeters
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