90 degrees west longitude
A hemisphere is a section of the Earth located north/south or between two major lines of latitude or longitude. The Northern Hemisphere is located north of the Equator. The Southern Hemisphere is located south of the Equator. The Western Hemisphere is located west of the Prime Meridian and east of the International Dateline. The Eastern Hemisphere is located east of the Prime Meridian and west of the International Dateline.
No, the prime meridian (0 degrees longitude) defines the dividing line between the Eastern and Western Hemispheres. The 180th meridian (opposite of the prime meridian) is the International Date Line, which primarily serves as the line where one day ends and another begins.
The International Date Line and the Prime Meridian both separate the eastern from the western hemisphere.
Morocco
The Prime Meridian and the Internation Date Line
The Prime Meridian is the line of 0 degrees longitude, dividing the Earth into the Eastern and Western Hemispheres. Any location east of 100 degrees west longitude falls in the Western Hemisphere because it is measured westward from the Prime Meridian towards the International Date Line. Thus, the half of the map east of 100 degrees west is in the Western Hemisphere.
The division between the extreme east and the extreme west is called the International Date Line.
180 degrees of longitude.
180°
The great circle formed by the prime meridian and the International Date Line divides the Earth into two equal halves, with the part east of the prime meridian and west of the International Date Line referred to as the Eastern Hemisphere. This line represents a 180-degree separation between the Eastern and Western Hemispheres.
180 degrees
180 degrees