However, is there not an accumulative duty time for 7 days & 14 days etc. It might therefore depend on which day you position. Indeed, as long as they feel they can get away with. I once had a roster that was a long evening flight from out of base with ground transport first, then position back on the a/c as pax. This would have meant 30 hours out of bed. Words were had with CP and something more humane was arranged. What they feel they can get away with depends and what you are willing to allow and horse trade for.