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प्रश्न
If it is Wednesday 10 a.m. at 15° E meridian, then what will be the time at IDL?
विकल्प
Wednesday 6 a.m.
Wednesday 9 p.m.
Thursday 2 p.m.
Thursday 6 p.m.
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उत्तर
Wednesday 9 p.m.
Explanation:
At 15° E, it's 10 a.m. Wednesday. The IDL is 165° west of 15° E, which is an 11-hour time difference (165° × 4 minutes = 660 minutes = 11 hours). Subtract 11 hours from 10 a.m., giving 11 p.m. Tuesday. Crossing the IDL westward changes the date back to Wednesday.
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संबंधित प्रश्न
Two boxes in different hemispheres are given in the following diagram. The IDL passes through both the boxes. In one box, the meridian, day and date is given. Find the day and date for the other box.
According to the international convention, at which meridian does the day and date change occurs?
IDL brings coordination in which of the following?
Give geographical reason.
IDL is proving to be very useful in today’s times.
Give geographical reason.
The day starts in Pacific Ocean on the earth.
Why is the IDL not a straight line like the 180° meridian?
Why is the IDL considered with respect to the 180° meridian only?
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 |
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.
Chennai - Singapore - Tokyo - Sydney - Santiago
