I also travelled to America and was there for 3 weeks, being a night owl means that jet-lag works in your favour initially in this instance, then your natural c

I also travelled to America and was there for 3 weeks, being a night owl means that jet-lag works in your favour initially in this instance, then your natural cycle adjusts around two weeks when your daily routine has stayed the same for all that time and your sleep pattern shifts gradually back to its natural state of being late. I did work out once that if I traveled East at a certain speed that I could maintain a 9-5 lifestyle with ease. Though costs and logistical reasons meant this was just a fun maths exercise at the time, but worked out I'd cycle the globe around every 9 weeks or so (was a while back so might be recall error).