Days, nights and a seven-day break in a 28-day cycle
The common DuPont schedule is a 28-day rotation combining 12-hour day and night blocks with several rest periods, including a seven-day break near the end of the cycle.
The long break makes this pattern attractive for planning, but its position depends entirely on the correct cycle start. Different workplaces can reorder or modify the blocks, so compare the preset line by line with the rota you were issued.
Calculate dates from the correct cycle start
- Identify the first of the four night shifts used as cycle day 1 in this starter.
- Check each work and rest block against the full 28-day workplace rota.
- Correct the day and night times before comparing—overnight endings affect the true length of every break.
- Compare with up to three other patterns and export qualifying shared breaks to your calendar.
DuPont rotation FAQ
How long is the DuPont cycle?
The common version shown here repeats every 28 days.
Does the DuPont rota always include seven days off?
The commonly described pattern includes a seven-day break, but employer implementations can differ. Use the official rota as the authority.
Can TimeCalculate handle its night shifts?
Yes. A finish earlier than the start is treated as an overnight shift ending the following day.