PUMPA - SMART LEARNING
எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்
Book Free DemoGreenwich Meridian
- The Royal Astronomical Observatory is situated at Greenwich near London in England.
- At the International Meridian Conference held in \(1884\) in Washington DC in the U.S.A, all the nations unanimously agreed on choosing the Greenwich Meridian as the international standard meridian \((0°).\)
- This \(0°\) line of longitude is called the Prime Meridian.
- It is also called as the Greenwich Meridian as it passes through Greenwich.
International Date Line
- The \(180°\)line of longitude has been established as the International Date Line.
- It is drawn on the Pacific Ocean between Alaska and Russia through Bering Strait.
Important!
On crossing, this line;
From the West to East - You lose a day
From the East to West - You Gain a day
From the West to East - You lose a day
From the East to West - You Gain a day
- Based on this, the date is fixed for different countries or regions of the world.
- This is not a straight line.
- Incase, if the line is drawn straight, two places in the same country will have different dates.
- In order to avoid this confusion, the International Date Line is found zigzag in few places.
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