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प्रश्न
While crossing the IDL, what changes will you make?
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उत्तर
- When you cross the 180° meridian, some precautions need to be taken.
- There is a difference of 12 hours from the Prime Meridian if you go from east or west.
- According to the convention, the start (and end) of a date is considered to be at the 180° meridian.
- Accordingly, an adjustment or change in day and time is made. Thus, while travelling from east to west of IDL, a day is added, whereas while travelling from west to east of IDL, the day remains the same.
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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.

If it is Wednesday 10 a.m. at 15° E meridian, then what will be the time at IDL?
According to the international convention, at which meridian does the day and date change occurs?
At which direction of the IDL does a new day start immediately?
What considerations have been made while deciding the IDL?
Why doesn’t the IDL pass through land?
Why is the IDL considered with respect to the 180° meridian only?
180° line of longitude is ______.
The International Date Line runs zigzag.
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

