It is a long day at "the office". However, under EUops-subpart Q ( the flight time limitations) rules and regs. We can be rostered a 14 hour Flight duty period twice in 7 days, as long as a rest day is allocated before and after the duty.
Things do need to run efficiently to get there and back in one duty and 99% of the time they do!
On my rest day today and off to SSH tomorrow.