In that direction, you turn your calendar ahead 24 hours when you cross the line.
You will go back in time which you will not understand which causes dasavou.
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.
you go back a day from the day you are on
I love this question. It happens at two places. It happens at the International Dateline, in a sense. At the dateline, it is ALWAYS one day on one side, and another day on the other side. It also happens at "midnight", as midnight moves across the planet's surface each day.
Add 1 day in addition to any other applicable time zone adjustment.
You "gain" a day - that is, the day shifts to the previous one. So, if it was 11pm on Sunday the 12th, and you crossed eastward over the International Date line, it is now 11pm on Saturday the 11th.
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.
Things get wet.
The International Date Line is the meridian where the date changes by one day when crossed east to west. This happens in order to account for the time difference between different parts of the world. Crossing the International Date Line from east to west, you "gain" a day, and crossing from west to east, you "lose" a day.
If you pass west over the International Date Line, you subtract a day from your calendar. This means that when you cross the line, you effectively move into the previous day. For example, if it’s Monday when you cross, it will become Sunday. This adjustment is necessary to keep the calendar aligned with the Earth's rotation and local time zones.
If you start at 177 degrees, 32 minutes, and 54 seconds West and you are traveling westward, you will NOT cross the International Date Line. You will cross it only if you travel East, at which point the coordinates from 177 degrees West will become 30 degrees, 12 minutes, and 11 seconds East longitude.
See link below-- good article on the date line.