and to further complicate things lets say your first trip back to the line after vacation and days off is a ULR. Our company regs require us to be acclimitized in a narrow time zone window for three days before the start of our trip! so now your three days off after vacation is suddenly spent readjusting to dubai time, ironically so you can then operate your trip back to the states where you probably just left! it happens all the time....and they are masters at placing that ulr after, before, or on both sides of a run of days off.

but many guys sneak in say a day before....if you get caught, not good!