DFC
AFAIA, the AAOMMNNSOO was a "Local" Manchester agreement....
Agreed [Although YOU haven't posted it [yet], Both PATCRU, PATCC
and Manch used to work a Four Shift System...eg...
A 1330-2130 M 0700-1330 N 2130-0700 Variation, M 0630-1230 Early go
Sleep Day, Rest Day....
Then back on the 2 on, 2 off.
Seen it, Done it, thrown the Tshirt away.....
The AAOMMNNSOO, was recognised as a "non-sequential shift pattern, and was changed NATIONALLY to a Shift Pattern of MMAANNSOOO or MMAAOMM/AA or even MMAALDLDOOO [LD is Late Day 1600-0100]
watp,iktch