also: じさボケ
jet lag
Refers to the fatigue and disorientation caused by traveling across time zones.
After the overseas trip, I couldn't sleep because of jet lag.
My jet lag was so bad that I couldn't concentrate on the meeting.
I got jet lag from the long-haul flight.
The jet lag wore off after about three days.
I got over my jet lag by getting some sunlight.
This time my jet lag is so bad I can't sleep well.