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प्रश्न
Why is the IDL considered with respect to the 180° meridian only?
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उत्तर
- Our 24-hour day starts at 12 midnight because of the earth’s rotation, the midnight occurs at different times at different places.
- As the earth is spherical in shape, every place has a place to its east.
- So, it was necessary to determine at what location to the east does the day start on earth?
- Hence, representatives of many nations got together under the leadership of an American professor, Davidson, in the year 1884 and decided the international date line.
- The line was drawn opposite to the Greenwich Prime Meridian i.e. with reference to the 180° Meridian.
- Therefore, IDL is considered with respect to the 180° meridian.
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संबंधित प्रश्न
While crossing the IDL, a person will have to add one day when travelling from ______.
Give geographical reason.
IDL is proving to be very useful in today’s times.
What considerations have been made while deciding the IDL?
Why doesn’t the IDL pass through land?
180° line of longitude is ______.
Match the following
| A | B |
| 0° line of latitude | Pole |
| 0° line of longitude | International Date Line |
| 180° line of longitude | Greenwich |
| 90° line of latitude | Equator |
23 1/220° N and S 66 1/220° N and S lines of latitudes are called ______.
Using an atlas, tell if, on the following route, the IDL will be crossed and show it on the map.
Delhi - Kolkata - Singapore - Melbourne
Using an atlas, tell if, on the following route, the IDL will be crossed and show it on the map.
Kolkata - Hong Kong - Tokyo - San Francisco
Using an atlas, tell if, on the following route, the IDL will be crossed and show it on the map.
Chennai - Singapore - Tokyo - Sydney - Santiago
