Shift Rotation Schedules
DuPont
28-day cycle with a signature 7-day break every 4 weeks, at the cost of a 4-night block.
Panama (2-2-3)
14-day 2-2-3 cycle, never more than three shifts in a row, every other weekend fully off.
Pitman (EOWEO)
The same 2-2-3 cycle as Panama, pinned to the calendar week so every other Saturday+Sunday is off together.
4-on-4-off
The simplest pattern to remember, but it drifts through the week — 56 days (fixed) before shifts land on the same weekday again.
All four rotations below solve the same problem: covering a job 24 hours a day, 7 days a week, with four crews on 12-hour shifts. Split any way you like, four crews of 12s covering 24/7 average exactly 42 hours a week — 168 hours of coverage every week (24 hours × 7 days) divided across 4 crews. Every pattern on this page hits that same 42-hour average; what changes between them is how the days on, days off, and night blocks fall on the calendar.
Pick a rotation to see its full calendar, generate it for any start date and crew names, and download the result to Excel.