Question

Describe the importance of intentional date line?

Answer 1

The International Date Line (IDL) is an imaginary — and arbitrary — line on Earth's surface that runs from the North Pole to the South Pole. When you cross the IDL, the day and date change. If you cross it traveling westward, the day goes forward by one, and the date increases by one.

Answer 2

Answer:

International Date line is an antimeridian of 180 degrees.  When you want to travel long distances, like from east to west and west to east, rather than crossing the whole earth, if you cross the international date line, it just takes few minutes to cross it.