Longitude on the Prime Meridian is zero. Half-way in a westerly direction between zero
and 180 degrees is 90 degrees west longitude. Some places at that longitude include
locations in Ontario Canada, Lake Superior, Wisconsin, Illinois, Arkansas, Louisiana,
the Gulf of Mexico, Mexico, Belize, Guatemala, the Pacific Ocean, and Antarctica.
90° East
(This is an approximation to go along with the spirit of the question. It's not
technically accurate, because the International Dateline doesn't exclusively
coincide with the 180° meridian in its entire length.)
That would be "90 degrees west longitude".
The longitude of a place halfway between 180° and
the Prime Meridian, and west of it, is 90° west.
Halfway from zero to 180° in the westerly direction puts you at 90° west.
Generally 90 degrees west.
However the international date line does not follow a meridian so you would need to specify the latitude to get exact points midway.
90 degrees west longitude
90 degrees west
90 degrees west
90 West
No. The "Prime Meridian" (Greenwich Meridian) is 0° longitude and runs through Greenwich, England, western Europe, and Africa. The International Date Line is on the other side of the world, at 180° longitude (east or west is the same line), and marks the start of each new calendar day. It is midnight at the Date line when it is noon at the Prime Meridian. The actual line has detours to accommodate Russia, the Aleutians, and New Zealand. The two meridians form a circle around the planet, and each divides the Eastern Hemisphere from the Western Hemisphere.
180 of them.
There are two. They are the Greenwich Meridian and 180 degrees longitude, the originally defined International Date Line.
The Mississippi River meanders roughly south from its headwaters in Lake Itasca, Minnesota, at longitude 95 degrees west, to its mouth on the Gulf of Mexico at longitude 89 degrees west. . For the greater part of its length, it is within a hundred miles of longitude 90 degrees west.
A meridian of longitude is an imaginary line made up of all the points on earth that have the same longitude, whatever that number is. If you draw any meridian of longitude on a globe, it looks like a solid half-circle between the north and south poles.
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.
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
180 degrees of longitude.
180°
No. The "Prime Meridian" (Greenwich Meridian) is 0° longitude and runs through Greenwich, England, western Europe, and Africa. The International Date Line is on the other side of the world, at 180° longitude (east or west is the same line), and marks the start of each new calendar day. It is midnight at the Date line when it is noon at the Prime Meridian. The actual line has detours to accommodate Russia, the Aleutians, and New Zealand. The two meridians form a circle around the planet, and each divides the Eastern Hemisphere from the Western Hemisphere.
180 degrees
180 degrees
180 of them.
There are two. They are the Greenwich Meridian and 180 degrees longitude, the originally defined International Date Line.