GENERAL KNOWLEDGE

Detailed explanation-1: -The prime meridian, or 0 degrees longitude, and the International Date Line, 180 degrees longitude, divide Earth into Eastern and Western Hemispheres. Many geographers consider the 20 degree west line of longitude and the 160 degree east line of longitude as the Eastern and Western Hemispheres.

Detailed explanation-2: -The international date line, established in 1884, passes through the mid-Pacific Ocean and roughly follows a 180 degrees longitude north-south line on the Earth. It is located halfway around the world from the prime meridian-the 0 degrees longitude line in Greenwich, England.

Detailed explanation-3: -Complete answer: It is the International Date Line (IDL) that corresponds along to the 180° meridian of longitude and is opposite to the Greenwich line. Since it mostly runs through the less-populated Central Pacific Ocean, the 180° meridian was selected as the International Date Line.

Detailed explanation-4: -The antimeridian is halfway around the world, at 180 degrees. It is the basis for the International Date Line. Half of the world, the Eastern Hemisphere, is measured in degrees east of the prime meridian. The other half, the Western Hemisphere, in degrees west of the prime meridian.