Letrozole and long haul holiday destination

Hi deebee60 , I had this issue 6 years ago, I was on Anastrozole and went on holiday to Singapore then Bali. I was worried re taking it at the right time. My solution was to plan ahead. I take my Anastrozole when I wake up, generally around 7am ish, but I don’t worry if I sleep late (rare). 
So for Singapore - 7 hours ahead of us - I took the first dose around 2pm Singapore time on the first day, then took it a bit earlier each day to bring it nearer to my ‘usual’ time. Then adjusted again for Bali. I set alarms on my phone to remind me. It worked ok though a bit of a nuisance - and may not even be necessary. But it gave me peace of mind. I do the same when we visit my son in Canada every other year or so. 
Someone may come on to say they were an advised that it doesn’t matter - I didn’t ask, just did it in a way that worked for me. 
Have a great trip! Love and hugs, HFxx