yes.
Because when flying either to Japan or America, you cross the International Date Line.
No.
In the path between Japan and Jamaica that does not cross the international date line, Japan is farther east.
You will cross the International Date Line when flying from Tokyo to Los Angeles. This means you will lose a day and arrive in Los Angeles on the same day you departed Tokyo.
In that direction, you turn your calendar ahead 24 hours when you cross the line.
It's not necessary, but that's the shortest way, and that's what all the airlines do.
1 day
how long dose it take to cross the international date
The International Date Line is the same for all nations.
They do.
No. The International Date Line does not go through China.
kiribati