International date line (the International Date Line), while the 360-degree rotation Earth takes 24 hours or 15 degrees in 1 hour. Areas in the path of Martin Julian, to try actions in the same time.
International date line (International Date Line), while the 360-degree rotation at 24 or 15 degrees in the first hour, so the area is in the same line of longitude will have equal time.
International Date Line (International Date Line) while the world spins 360 degrees take 24 hours or 15 degrees in 1 hours. Therefore, the area is in the same longitude line have equal time.