Originally Posted by
bankops
Posts are fairly useless without specific country references. TWOV countries are not even TWOV for all nationalities and often there are time limits of 12hrs, 24hrs or even 48hrs/72hrs in some places.
A-B-A or A-B-C is irrelevant, transit is transit. You are taking a flight out of the country within Xhrs of arriving is transit, for countries with TWOV.
And at least in the case of
China, there is a difference between A-B-A (TWOV prohibited) and A-B-C (TWOV sometimes possible), and the time limit also depends on the "B" airport! This is a very complex issue that depends on a lot of factors. I had to do a few hours of studying before feeling confident about my TWOV at PVG.