Question

Unlike other Meridians International Date Line is drawn zigzag in order to 

(a) permit certain land areas and groups of islands to have the same calendar day 

(b) facilitate the sailors to adjust time in their watch

(c) adjust the day in calendar while sailing from east to west and vice versa 

(d) make 180°E and 180°W coterminous

Answer 1

(a) The International Date line is an imaginary line which go through the North pole to the South pole. It is 180º away from the Greenwich Meridian.