Question

The IDL was drawn opposite to _ _ _ _ _ _ _
A. Greenwich Mean Time
B. Greenwich Prime Meridian
C. Indian Standard Time
D. All of above

Answer 1

Hint: We know that the shape of the earth is spheroid, but we know how to determine the time, date, and location of the earth's places. For that matter, for navigation and geographical information, we have to draw some imaginary lines like longitude, latitude, equator, prime meridian.

Complete Answer:
- With reference to the 180-degree meridian, the IDL was drawn opposite the Greenwich Prime Meridian, i.e. Altering the day and time while crossing this line is an international convention.
- The International Date Line (IDL) is an abstract demarcation line on the surface of the Earth stretching from the North Pole to the South Pole and demarcating the transition from one calendar day to the next. It travels through the middle of the Pacific Ocean, roughly matching the 180 ° longitude line but deviating to travel through some territories and island groups.
- The IDL is roughly based on the 180-degree longitude meridian, roughly in the middle of the Pacific Ocean, and halfway from the Greenwich meridian around the world. In many places, the IDL follows exactly the 180 ° meridian. The IDL, however, deviates east or west away from that meridian in other places. The political and/or economic affiliations of the affected areas generally accommodate these different deviations.

The right answer is option B (Greenwich Prime Meridian).

Note: To determine the date that is passed through the Arctic Oceans, Bering Strait, Pacific Ocean, Antarctica, Fiji, Tonga, and other islands, it is the International Date Line drawn at 180-degree longitude. If we see this imaginary line, then we discover it is not a straight line but a zig-zag line.