9/80 schedule calculator

Nine-hour days, one eight-hour Friday and one Friday off every two weeks: 80 hours in nine workdays. Enter one of your Fridays off to see your 9/80 calendar for any month, with every Friday off marked and your hours week by week. No sign-up.

Your schedule

October 2026

Sun
Mon
Tue
Wed
Thu
Fri
Sat
27 
289h
299h
309h
19h
2 
3 
4 
59h
69h
79h
89h
98h
10 
11 
129h
139h
149h
159h
16 
17 
18 
199h
209h
219h
229h
238h
24 
25 
269h
279h
289h
299h
30 
31 
  • 9h 9-hour day starting at 8 AM
  • 8h 8-hour Friday
  • Fridays off: Oct 2, Oct 16, Oct 30

Workdays

19

in October

Hours

169

in October

Weekly average

40 hrs

over the 14-day cycle

Fridays off

3

in October

Longest break

3 days

off in a row

Estimated gross pay for October

$5,070

Regular pay, 169 hrs
$5,070
Run this schedule for your team in InShift →
Weekly hours, Sunday through Saturday
WeekShiftsHours
Sep 27 to Oct 3436
Oct 4 to Oct 10544
Oct 11 to Oct 17436
Oct 18 to Oct 24544
Oct 25 to Oct 31436

For office managers

Everyone’s 9/80 Fridays on one schedule

This calculator covers one person. In InShift, the 9-hour day and the 8-hour Friday are two shift types, each Friday group can be its own “Department”, and the “Month” view shows who’s in on any given day, with hours and pay under every name. Published shifts go straight to everyone’s phone.

  • Two shift types under “Shift types”: a 9-hour day and an 8-hour Friday
  • A Friday group as a “Department”: the planner groups and filters people by it
  • Time-off requests sent from the phone and approved by a manager
  • “Payroll” builds each pay period from the schedule, person by person, with “Export to Excel”
Employee scheduling software

How the 9/80 schedule works

A 9/80 work schedule fits two weeks of work, 80 hours in all, into nine workdays. Over two weeks you work eight 9-hour days and one 8-hour day, and take the tenth day off. That day off is almost always a Friday, so every other week ends Thursday evening.

One two-week period starting on a Sunday: hours worked each day, · = day off.
SunMonTueWedThuFriSat
Week 1·99998·
Week 2·9999··

9/80 schedule calendar: which Fridays are off

Every other Friday, which works out to 26 Fridays off a year. Most months have two. A month with five Fridays has three if its first Friday is one of yours. Enter any one of your Fridays off in the calculator, and the calendar above marks the rest for whatever month you choose.

Many offices split staff into two groups with alternating Fridays off, so someone is always in on Fridays. If yours does, start from your own group’s Friday off.

How many hours is a 9/80 schedule

80 hours every two weeks, or 40 a week on average, the same as five 8-hour days. Counting Sunday through Saturday, the weeks are uneven: 44 hours in the week with the 8-hour Friday and 36 in the week with the Friday off.

That 44-hour week is why employers on a 9/80 often start the workweek halfway through the 8-hour Friday: four of its hours fall in one workweek and four in the next, so each workweek comes to exactly 40. Your payroll team knows how your workweek is defined; the table under the calendar shows a simple Sunday-through-Saturday count.

Nine hours means nine hours of work. With a one-hour lunch, a day that starts at 8 AM ends at 6 PM.

Who the 9/80 schedule is for

The 9/80 is an office schedule. It reshapes a standard 40-hour daytime week for engineers, analysts, government and city employees, and other teams whose work fits between morning and evening. Jobs that need round-the-clock coverage run on rotations like the DuPont or Pitman schedule.

For employers

  • Employees like it, and hours and pay stay the same.
  • Longer days give more overlap with other time zones.
  • Someone is out every Friday, so you need two groups or a coverage plan.
  • The workweek has to be defined with payroll before the first pay period.

For employees

  • A three-day weekend every two weeks without using PTO.
  • Your Friday off is handy for appointments and errands.
  • Nine-hour days are long, especially with a commute and kids to pick up.
  • Calling in sick on a 9-hour day uses 9 hours of PTO.

How to run a 9/80 schedule in InShift

In InShift, you set up two shift types under “Shift types” (a 9-hour day and an 8-hour Friday) and a “Department” for each Friday group. You place each group’s two weeks yourself in the “Planner”; where a week repeats one you’ve already built, “Copy week” brings it forward. The “Month” view shows who’s in on any given Friday, with hours under every name. If your team schedules week by week, the weekly and biweekly schedule templates track hours and overtime in Excel.

Frequently asked questions

What is a 9/80 schedule?+

A two-week schedule of 80 hours over nine workdays: eight 9-hour days, one 8-hour day and one day off, usually every other Friday.

How do I make a 9/80 schedule calendar?+

Enter one of your Fridays off in the calculator above and choose a month. It marks every 9-hour day, the 8-hour Friday and your Fridays off, and shows your hours for each week.

How many Fridays off do you get on a 9/80 schedule?+

Every other Friday: 26 a year, two or three a month.

Is a 9/80 schedule 40 hours a week?+

On average, yes. Counting Sunday through Saturday, the weeks are 44 and 36 hours, which is why many employers start the workweek halfway through the 8-hour Friday so each workweek comes to exactly 40.

More rotations, templates and tools

DuPont schedule→

Four crews, 12-hour days and nights over four weeks, and seven days off in a row.

2-2-3 schedule→

The Panama rotation as your own calendar: hours, overtime and pay for any month.

Pitman schedule→

Four crews on a 2-2-3 pattern, fixed or rotating days and nights, 24/7 coverage.

Shift schedule templates→

Pitman and DuPont in Excel with coverage rows, plus weekly and biweekly schedules.

Time card calculator→

Clock in, clock out and breaks per day: hours, overtime and pay for the week.

Shift scheduling software→

Shift types, rotations on a month view, night shifts and coverage by shift.

Get the whole team on one schedule

Setting up a location, two shift types and your first two weeks takes an afternoon. From then on, everyone’s hours come straight from the schedule.

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