Nothing in particular happens; if you happen to be napping aboard the ship at the
moment of crossing, you can sleep right through it, just as you do when crossing
any other meridian of longitude.
By international agreement, however, your calendar date becomes one less when
you cross the International Date Line going east.
The International Date Line is an imaginary line of longitude of 180 degrees around the Earth. It works when a person crosses the line from the east to the west a day is added. The opposite effect happens when crossing from west to the east with a day subtracted.
Sunday
You will go back in time which you will not understand which causes dasavou.
The international dateline passes through the Pacific Ocean. The international dateline is an imaginary line that is 180 degrees east of the Greenwich Meridian.
you go back a day from the day you are on
west
The closest continent east of the International Date Line is North America.
west
Add 1 day in addition to any other applicable time zone adjustment.
Nuku'Alofa, the capital, is about 300 miles east of the IDL.
French Polynesia is east of the International Date Line.
the international date line