45 before Pol
I might add things up differently than you, but mmaaommooo or mmaaoddooo means you have 4 days off. Just because they are not consecutive doesn't mean they don't count.
I do permanent nights, and I actually take the attitude that I have 4 days off on a mmaannsooo cycle. The first night doesn't start until 2200 so although I can't go drinking, I class this as being as good as a day off.
The sleep day - I finish at 0700, get home by about 0745 and sleep 'til about 1100. Then I have the rest of the day to myself.
People are different and react to lack of sleep differently - I don't have any problems with feeling tired after a couple of hours kip, but saying that I'm only 39 - no doubt as I get older it will start to affect me more.
By stating the above about feeling I get 4 days off, I'm not some management lackey, but am someone who has previously worked outside of NATS doing real hours!!