Thanks!..I fly the Boeing 767ER (Extended Range, bigger fuel tanks) out of Atlanta with Delta....In reference to the -7secs/day, I set the watch by pulling the crown out to the #3 stop, which stops the second hand at zero and then set it via either the NIST atomic clock website:
http://www.time.gov/timezone.cgi?Eastern/d/-5/java
or the USNO atomic clock website here:
http://tycho.usno.navy.mil/simpletime.html
I then check it every 24 hours....
I don't use the #2 crown position to reset the 12hr marker/hand. Rather, I leave my local home time displayed, set local time @ destination with the bezel, then use the face 12 hr markings and the 24 hr hand to tell GMT...
A bit bummed because COSC standards are -4/+6 per day...mine is running nearly 2x allowable COSC....If I had a choice I wish it ran +, it would help me be on time!