2-2-3 Shift Calculator

The misconception: short blocks mean an easy rota

Two on, two off. Looks gentle on paper. People new to the 2-2-3 — you'll also hear it called Pitman or Panama, same rota, different name depending which side of the Atlantic you're standing on — tend to assume the whole fortnight is that mild. It isn't, and that's not a small detail. The pattern is really two halves stitched together, a soft opening and a much heavier tail, and mixing the two up is exactly how people get blindsided by week two.

The two-on, two-off stretch really is as easy as it looks. You're never more than a couple of shifts from a rest day. Then the three-on block turns up, and if those three happen to fall on nights, that's where the fatigue actually lives — not in the name, in the back half of the fortnight nobody warned you about. The name describes the shape, not the effort. Treating both halves as equivalent is the single most common way people get this rota wrong before they've actually lived it.

The mechanics: a fortnight that mirrors itself

Fourteen days, on/off blocks flipping: two on, two off, three on in week one, the mirror image in week two. Fourteen doesn't divide evenly into seven, so your working days land on a different weekday each fortnight. That's actually a decent upside most people don't think to credit it for — you're not the one perpetually missing every Friday, because the workload genuinely spreads itself across the week over time.

Four teams usually run this together, offset from one another, so the place stays covered without anyone living at work — you'll see it in control rooms, on ICU and A&E wards, in custody suites, on continuous-process plants. Most teams swing between day shifts (often 07:00–19:00) and night shifts (19:00–07:00) as the fortnight turns over, and that swing is the part that takes the most getting used to, more than the three-on block itself.

The honest trade-off

Here's what you get: a repeating fortnight predictable enough to book a holiday, a course, or childcare months in advance, plus regular two-day breathers that keep the whole thing feeling sustainable rather than relentless. Here's what it costs: the three-on tail, on nights especially, is where tiredness genuinely piles up, and the day-to-night swing every fortnight asks real work of your body clock — blackout curtains and a strict wind-down routine stop being optional extras and start being the thing that gets you through. Neither side cancels the other out. It's a real trade, and whether it's a good one for you comes down almost entirely to how you personally handle nights.

Pulling your own 2-2-3 calendar together

The calculator above turns the theory into dates. Pick your team (A, B, C or D — getting this right matters, since each team runs the same shape offset from the others), enter the first day of your current fortnight, and generate the 12-month view. Bank holidays are flagged automatically, and the date checker in the sidebar answers any single date — Christmas, a wedding, a school event — instantly. Export the whole year to your phone calendar once it looks right.

Quick answers

Will I be working Christmas? There's no fixed answer, because it depends entirely on your team and where your cycle start date falls — some teams will be deep in the three-on block over the holidays, others will land squarely in their rest days. Use the date checker above and type in 25 December to find out in seconds, rather than trying to count fourteen-day cycles forward in your head from now until Christmas.

Why is it called both Panama and Pitman? Same rota, two names, and neither is more "correct" than the other. Pitman is the older term that stuck around in a lot of UK workplaces; Panama caught on more widely in the US and has spread back into some British sites too. Your employer's word for it doesn't change the underlying shape of the rota, or which calculator on this site is the right one for you.

How do I find out which team I'm on? Check your contract, the rota notice board, or your pay slip, or simply ask your line manager — most workplaces label teams A, B, C and D. It's worth confirming once rather than guessing, since the wrong team in the calculator shows the opposite of your real days, not a close approximation of them.

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