Sleep after sleep

I am in U.S. now, safe and fine.

 

When I went onboard the airplane in Shanghai, it was 6
p.m. on April

23rd  Beijing Time, and I slep for about 11 hours and when
the fligh

arrived in Chicago, the local time was 6:07 pm on April 23rd,
and after I

flied to Detroit, it was 11:30 pm local time, so I went to
bed again.

But I woke up at 4am today