Originally Posted by
blimey
Any 24 hour layover will probably leave you hanging in the straps - you cannot control your sleep patterns by drawing the curtains and sticking earplugs in.
It all depends.
I am about to start a europe-US east coast flight, 8hrs flighttime (back slightly less).
Reporting 11.50lt, finished at midnight homebase time. About 21hrs rest before flying back and to be honest, that works better for me than tagging another day onto the restperiod.
The second night I always sleep less well than the first and I feel more rested when flying back after only 1 night at destination.