Um, I don't think so; according to the schedule the morning flight from DUB-JFK departs 10:45 and arrives 13:15, while the late flight back departs 21:45 arrives 09:45. Even with a twelve hour rest period you're guaranteed an overnight on that one.
It's that small focused mindset that makes me glad people like you are not in charge of negotiating anyone's contract.
So just because this weeks schedule doesn't fit that rule has no bearing on next weeks schedule.