Continental rotation

4 on / 4 off schedule calendar and PTO optimizer

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

Your rotation

Build your calendar

Start with one shift you know. Your plan updates instantly.

Schedule pattern

Choose a known shift and select the matching position in the 16-day cycle.

A date you know you workThat date’s cycle position

Calendar yearPTO budget

hours

Optimize for

Treat U.S. federal holidays as offLeave this off if your rotation continues through holidays.

Saved only on this device. No account required.

Best PTO opportunity

2 PTO shifts unlock 6 days off

Dec 31, 2025–Jan 5, 2026 · 24 PTO hours · 3.0 days away per PTO shift

6days
away

The bridge

Request these dates

Back Jan 6

Dec 31Jan 5

2 PTO shifts+4 natural days off=6 consecutive days

Day Night Duty Off PTO

Sun

Mon

Tue

Wed

Thu

Fri

Sat

26D

27D

28O

29O

30O

31O

10D

11D

12D

13O

14O

15O

16O

17N

18N

19N

20N

21O

22O

23O

24O

25D

26D

27D

28D

29O

30O

31O

More possibilities

Your best breaks in 2026

Choose a plan to highlight it on your calendar.

Quick answer

Do I work on this date?

Check any date against your current rotation.

Date to check

YOU WORKAug 25, 2026Day shift · 12 scheduled hours

Year at a glance

4 on / 4 off in 2026

Scheduled shifts: 181
Scheduled hours: 2,172
Weekend shifts: 49
Holiday shifts: 4

Take it with you

Export or share your calendar

Your schedule stays private unless you choose to share it.

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. Your selected known work date is matched to one position in the repeating sequence. Dates before and after that anchor 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?

Only when you also identify where that date sits in the repeating cycle. Schedules with several work positions are ambiguous otherwise, so Time Off Map asks you to choose the matching cycle day instead of silently guessing.

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.