21-day fixed-shift cycle

7 on, 3 off. 7 on, 4 off.

A long-block roster with two work runs and a four-day recovery break at the end of every cycle.

Build it in ShiftFlowr

Exact preset

The full 21-day cycle

ShiftFlowr applies one chosen shift type to both seven-day work blocks. The dates move through the week because the full cycle lasts exactly three weeks.

21 daysFull cycle
14 shiftsPer cycle
56 hoursWeekly average at 12 hours
The average is high when every shift lasts 12 hours. Check your contract, breaks, and local working-time rules rather than assuming every employer uses the same shift length.

Build the correct phase

Pick the preset

Select 7-3-7-4 from the pattern library.

Choose day one

Set the date your current seven-shift run began.

Check the preview

Confirm both rest blocks land on the dates your rota shows.

7-3-7-4 FAQ

Does this preset rotate days and nights?
No. The built-in version uses your selected fixed shift type. Build a custom sequence if your employer changes shift type within the 21 days.
Why does the anchor date matter?
It determines whether any date falls in the first work block, the three-day break, the second work block, or the four-day break.

See the long blocks before you apply them.

ShiftFlowr previews every work day and rest block against real calendar dates.

Get ShiftFlowr

See the full step-by-step guide with screenshots →