Sherlock Holmes,
I think you forgot about time difference. Hypothetically, this gentleman went to Mumbai, which is 2.5 hours behind Hong Kong time. He flew from Hong Kong at 4 pm. Let's say the flight time is about 8 hours. He could be home before midnight on the same day. And remember he will have 8 full hours to compose his report, reminiscing all the juicy details.
Make sense?
Now.... why would you call me "Sherlock Holmes?"
As if you think I am trying to do some kind of detective work on OP's report?
Really?
And yes, DaBest Aced the reply to you.
SEAJ