Latitude Maps

what is the relationship between longitude and the international date line?

International date line is an irregular line drawn on the map of the Pacific Ocean, near and in many places with the 180th meridian.Longitude is the location of a place east or weest of a north south line called the prime meridian. It is raging from 0 degrees at the prime meridian to 180 degrees at the international date line.

Public Comments

1. First let me tell you that the IDE is not exactly a longitude but it a crooked one. The IDE is nearly at the 180th meridian. Yes, there is one similarity in both, they are both imaginary lines drawn on the earth's surface for our convenience.
2. As the earth rotates once every 24 hours, and most people in the world want to go to bed at night and get up in the morning, it's necessary to divide the world into time zones, with the time changing progressively as the earth rotates, approximately one hour for every 15 degrees of longitude. This means that somewhere on the globe there has to be a line where all the progressive time delays as the earth moves from west to east are rectified and a 24 hour advance takes place. Now my guess is that the scientists in Greenwich didn't want this happening on their doorstep, so they put the International Date Line as far away as they possibly could, on the other side of the world.
3. Adding Ynot's answer, the date line is crooked so that a country or island isn't cut in half by it. It wouldn't be good to go to someones house and be a whole day ahead or behind.
4. The international dateline is the only point on Earth where you can cross over it and be into another day.