Originally Posted by
Xyzzy
Your 5:30am arrival on the 5th is counted (for 72hr rule purp
ses) as your arriving at 12:01am on the 6th. So you have to have a flight departing before 12:01am on the 9th. Your flight is on the 8th so you're fine. ENJOY!
Thanks Reb, and if you are wrong, and we are locked up in the
Beijing Re-Education Centre for a few weeks, remember
I KNOW WHERE YOU LIVE. 
Just changed to the 3.25pm flight to Mongolia, based on the always superb FT advice. Can't beat it. ^^^
Sitting in the super swanky First Class lounge in Bangkok at 10pm local on a Saturday night, heading for China in an hour, and getting onto United to change tickets was a challenge, as they do not fly here anymore, which was news to me.
.