It is indeed - it's always difficult getting back on to UK time. We normally work on the basis it's going to take a week for us to readjust. billinghamv struggles a bit more than me in readjusting - probably to do with how much sleep you typically need - I need less than my better half.

SFO T2 TSA Pre-Check was a breeze this morning - no one in the line in front of us. Everyone was very friendly. Got into the lounge in no time at all - not very busy to be honest. All food is charged which is pants for a frequent flyer lounge.