International date line zig zags through Pacific. See the map. Since countries are free to choose which date to observe, that explains why the international date line actually zig zigs — instead ...

The international date line is the "line" that runs through the middle of the Pacific Ocean about 180 degrees longitude from the North Pole to the South Pole. It's located halfway around the world ...

The international date line is the "line" that runs through the middle of the Pacific Ocean about 180 degrees longitude from the North Pole to the South Pole. It's located halfway around the world ...