Four 12-hour day shifts, four days off, four night shifts, and four more days off. Align one known shift below to generate your calendar and find the strongest PTO bridges.
16-day cycle4 days · 4 off · 4 nights · 4 off
Preparing your planner…
Cycle length16 days
Work shifts8
Hours per cycle96
Average weekly hours42
Longest work block4 days
Longest natural break4 days
Exact preset
How the 4 on / 4 off cycle is mapped
Time Off Map treats the date on which a shift begins as its service date. It uses the simple roster answers above to find the one repeating sequence that fits. Dates before and after that known shift are calculated in both directions, including leap days.
1Day shift12h
2Day shift12h
3Day shift12h
4Day shift12h
5Off—
6Off—
7Off—
8Off—
9Night shift12h
10Night shift12h
11Night shift12h
12Night shift12h
13Off—
14Off—
15Off—
16Off—
Before relying on the calendar
This preset alternates four 12-hour day shifts with four 12-hour night shifts.
Fixed-shift 4-on/4-off rosters can be represented later with a custom cycle.
Common questions
4 on / 4 off schedule questions
Can one known work date identify my entire calendar?
Sometimes. When several parts of the rotation could fit that date, Time Off Map asks what your roster shows on a carefully chosen nearby date. It keeps asking only until one exact match remains and never silently guesses.
Does a holiday automatically remove my shift?
No. Rotating operations frequently continue through holidays. Holidays are informational unless you deliberately turn on the setting that treats U.S. federal holidays as non-working days.
Why might my employer’s 4 on / 4 off schedule differ?
Schedule names are not universal standards. Relief times, fixed versus rotating shifts, Kelly or debit days, crew phases, and local agreements can change the sequence. Compare the visible preset with your roster before using the result.