We were going along fine there until we got almost to the end of the question.
That's where we found that you too are one of the huge number of people who
thinks that there's a standard set of "lines".
There isn't. Some maps and globes have some lines of constant latitude and
longitude printed on them, and some don't. The ones that do may have them
printed every 45 degrees, or every 30 degrees, or every 20, 15 or 10 degrees.
It's completely up to the publisher of the globe or the map. The mapping software
that I use will print a line every 2 seconds of longitude if I want them. That would
be 648,000 lines of longitude around the world.
If the International Date Line had not been zigged and zagged to avoid splitting
states, countries, or islands into two different calendar dates, it would have
exactly followed the meridian of 180 degrees longitude ... directly opposite the
Prime Meridian and 180 degrees away from it, both east and west.
180 of them.
180 degrees of longitude.
90 degrees west longitude
That would be "90 degrees west longitude".
There are two. They are the Greenwich Meridian and 180 degrees longitude, the originally defined International Date Line.
Roughly 180. I say roughly because the International Date Line is not perfectly straight along a meridian, but varies from straight to accomodate political boundaries.
The longitude of a place halfway between 180Â° and the Prime Meridian, and west of it, is 90Â° west.
Parallels are for latitude, while meridian is for longitude.
24 Hours. When you pass the international date line which is the meridian of 180 longitude, you add a day if going west or subtract a day going east.
If you take a globe or a map and draw a line through all the points that haveexactly the same longitude, the line you get is the meridian of that longitude.
90 degrees west longitude
There are an infinite number of meridians ... one at every possible longitude that you can think of or name ... but only one Prime Meridian ... at zero longitude.
-- Origin of longitude -- Zero degrees longitude -- Boundary between Eastern and Western Hemispheres -- Greenwich Meridian
There are two major lines of longitude between the poles: the Prime Meridian and the International Date Line.
The difference is 180 degrees of longitude.
The angle between the Prime Meridian and a place west of it is the west longitude of the place.The angle between the Prime Meridian and a place east of it is the east longitude of the place.
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.
A meridian of longitude is an imaginary line made up of all the points on earth with that longitude. If you were to draw any meridian on a globe, it would look like a solid half-circle between the north and south poles.
This is 90 degrees east longitude, and has no special name.Located bear this line is the city of Thimphu, capital of Bhutan.
Longitude of a place is the angle east or westbetween the Prime Meridian and that place.