Answer:
International date line would represent by 180 longitude
Explanation:
An "imaginary line of demarcation" on the earth’s surface that runs from the south pole to the north pole. It demarcates the one-day calendar change to the next. Through the centre of the pacific ocean, it passes with 180-degree longitude and halfway through the world from the Greenwich meridian.
Though in many cases the imaginary line of demarcation follows 180-degree meridian exactly. And at other places, the imaginary line of demarcation deviates east or west through the apex.
