The Pacific one.
The International Date line has most of its length in the Pacific Ocean. The line extends from the Arctic Ocean to the Southern Ocean roughly along 180° longitude (E or W).
Because when you cross it, you must change your calendar by one day, otherwise you will be out of sync with everyone else in the world.
The ocean is split or pass by the International Date Lineis Pacific Ocean.
through the middle of the Pacific Ocean
Most of it is in the Pacific ocean.
Pacific ocean
The International Date Line is an imaginary line on the Earth's surface that marks the change in calendar day. When you cross this line from east to west, you either add or subtract a day depending on the direction. It runs roughly along the 180° meridian in the Pacific Ocean.
through the middle of the Pacific Ocean
Pacific oceanThe Pacific Ocean, to the east of New Zealand.
The Pacific Ocean.The arctic, the pacific, and the southern.
Atlantic Indian
It passes through the middle of the Pacific Ocean.