gr4techie, it was not a planned catnap. The plotter remained awake and only realised the pilots were asleep when we reached Tehran and needed to turn South. The AEO, the crew chief and myself were all asleep and the pilots didn't respond.
Our fit at the time included a Nav's Heading Unit or NHU which was intended for minute changes of heading. The Nav was able to dial in the full heading change of about 120 degrees.
As we changed heading the sun burst into the cockpit and I awoke and checked both pilots who denied they had been asleep
We had not called Tehran ATC and they didn't respond; probably asleep too.