Nothing special happens. If the flight crew didn't tell you about it, you wouldn't
notice anything. It's handy to know about it, though, because when you cross
the IDL traveling east, you're supposed to turn your watch and your calendar
back a day.
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.
Alaska, USA is just east of the International Date Line.
Traveling west across the date line.
When you cross the International Date Line traveling from Asia to North America, you will lose a day. This is because the Date Line serves as the boundary for calendar days; when you cross it from east to west, you subtract a day. For example, if it's Monday in Asia, upon crossing the Date Line, it will be Sunday in North America.
The International Date Line is an imaginary line that runs from the North Pole to the South Pole. It marks the boundary between one calendar day and the next. When you cross the line, you either advance a day when traveling east or go back a day when traveling west.
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.
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.
You don't gain a day by traveling West, only by traveling East. You lose a day going West.
Alaska, USA is just east of the International Date Line.
The International Date Line which is located in Grenwich, England.
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.
Traveling west across the date line.
The closest continent east of the International Date Line is North America.
If it is Thursday on the west side of the International Date Line, what day is it on the east side?
The International Date Line is an imaginary line that runs from the North Pole to the South Pole. It marks the boundary between one calendar day and the next. When you cross the line, you either advance a day when traveling east or go back a day when traveling west.
If it is Thursday on the west side of the International Date Line, what day is it on the east side?
If it is Thursday on the west side of the International Date Line, what day is it on the east side?