4 on 4 off rules. I did a period of the same but with 2 sets of days and 2 sets of nights, but it didn't seem as good as 4 days, 4 off, 4 nights, 4 off.
I did do a couple of good shifts in the RAF - 2 weeks on (1 days and 1 nights) followed by 2 off (oh yes) or my main one where there were 3 shifts and we worked 8 hour shifts.
1 week of days, 1 week of evenings, then the shift split in two. 1 half worked a weekend, the other half had time off. Then the half that worked the weekend had a week off and the half that previously was off, worked nights. This meant that every weekend was a long one unless you worked and you had one week off in six. Each shift was only 8 hours long and it was the best thing I have ever been involved in - hard to imagine that it was dreamt up by the military, but there you go.
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Gimme a bottle of anything, and a glazed donut......TO GO!