The international date line is an imaginary line that runs north-south across the Pacific Ocean from the North Pole to the South Pole. When you purchase through links on our site, we may earn an ...

The international date line roughly follows the 180th meridian north to south through the middle of the Pacific Ocean. It is located halfway around the world from the prime meridian, which crosses ...

“While the Prime Meridian feels sacrosanct, the international date line isn’t a meridian; it’s pretty arbitrary,” Tim Montenyohl, a cartographer who has mapped the date line, wrote in 2018.

The international date line is on the opposite side of the planet from the Greenwich — or prime — meridian that marks zero degrees longitude. Crossing the line from east to west, people would ...