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What is a Kelly day?
A Kelly day is a scheduled day off built into a rotation so the average working week comes down to the hours the contract calls for. It is not leave and it is not a favour — it is part of the pattern, and it arrives on a fixed cycle.
Where the name comes from
It is generally traced to Edward Kelly, a Chicago mayor of the 1930s, and the arrangement his administration reached with the fire service to cut the working week without cutting cover. The name stuck far beyond Chicago and far beyond fire.
What it looks like in fire
On a 24-hour tour rotation, three platoons working one day on and two off produce a fifty-six hour average week. Inserting a scheduled day off every ninth day — the Kelly day — brings that down without changing the shape of the rotation.
What it usually means in policing
Police departments borrowed the term for something related but not identical: a recurring scheduled day off inside a rotation, often used to trim a long cycle back to the contracted average. Whether your agency calls it a Kelly day, an ADO or simply a scheduled day off, it behaves the same way — it is fixed, it repeats, and it should be on your calendar months ahead.
Getting it on the calendar
Because a Kelly day sits inside the cycle rather than on top of it, saving the whole pattern once puts every one of them in place for the year. There is nothing to add by hand and nothing to remember.
Where it turns up
The Kelly schedule, day by day · California Swing · 24/48 and 48/96
Put your own rotation on the calendar
Save the pattern your agency runs once and the year fills itself in — forward as far as you want to look, and back over the months you have already worked.
Scan to install — or hold it up for the officer next to you.
