24/48 firefighter schedule calendar and PTO optimizer
One 24-hour duty shift followed by 48 hours off, repeating every three days. Align one known shift below to generate your calendar and find the strongest PTO bridges.
3-day cycle24 hours on · 48 hours off
Preparing your planner…
Cycle length3 days
Work shifts1
Hours per cycle24
Average weekly hours56
Longest work block1 days
Longest natural break2 days
Exact preset
How the 24/48 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.
124-hour duty24h
2Off—
3Off—
Before relying on the calendar
The duty date is treated as one scheduled 24-hour shift.
Kelly, debit, trade, and training days are not added automatically.
Common questions
24/48 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 24/48 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.