Pitman rota for 8 people: the fixed-shift version of 2-2-3
Pitman is the 2-2-3 cadence with the rotation taken out. Four teams of two, 12-hour shifts, 8 people in total: Teams A and B share the day post between them, Teams C and D share the nights and never appear in daylight. Each team's fortnight is built from blocks of 2 and 3, in order: work 2, off 2, work 3, off 2, work 2, off 3. Nothing in the pattern runs longer than 3 days in either direction, and the hours average 42 a week across the 14.
There are really only two lines in the grid. Teams A and C run one of them, one on days and one on nights. Teams B and D run its exact inverse. So the site is never staffed by a mixture of teams: for 2 or 3 days at a time half your roster holds the whole clock, then hands the whole clock to the other half. On duty is 4 on every date, 2 on days and 2 on nights, with 0 gaps.
The grid below runs 26 cycles across 364 dates with each of the four teams on its own line. At this size the useful part is not the cycle, which people learn in a fortnight, but the dates: which half of the roster is in on a given Tuesday, and which two of them are in on it at night.
