question on flight duty times
based in uk
spent 4 days away in usa, flew through the night leaving at 0100z. Upon return to uk, had 19 hours rest, was asked to fly to usa, 6 hours behind.
I was told that having adapted to usa time, this did not apply to when i returned to home base. the duty was planned at 13 hours.
It was my understanding that i needed time to adjust back to uk time, or else i was still on local time for usa, which meant that I could not complete this duty as it was an early report.
does anyone have any feedback if this is correct, or does it imply that when you return home, you are back on the local time, regardless of length of duty away.
thanks for your help