The International Date Line (IDL) roughly follows the 180° longitude which is called the 180th meridian or antimeridian.
Unlike lines of longitude which are straight lines, the Date Line deviates to pass around some territories and island groups (Fiji, Tonga, Samoa, etc). The Date Line deviates from the straight line of longitude to keep it from passing through countries such as the USA (Alaska), Russia (Wrangel Island and Chukchi Peninsula), or New Zealand, and island nations such as the Marshall Islands and the Aleutian Islands.
the international date line is 0 degrees
The line 180 degrees east and west of the prime meridian is called the International Date Line.
Most of it is at 180 degrees.
international date line
International Date Line
Whether travelling to the West or to the East from the Prime Meridian (zero Longitude) the International Date Line is 180 degrees Longitude.
Las Vegas is approximately 116 degrees west of the International Date Line, which lies at 180 degrees longitude. Therefore, there are about 64 degrees of longitude separating Las Vegas from the International Date Line.
Most of the International Date Line.
The international date line
The international date line
180 degrees of longitude.
The line 180 degrees from the Prime Meridian is called the International Date Line, which serves as the boundary between one day and the next on the Earth's surface.