Cron symbol: - ,

Ranges (-) and lists (,) in cron expressions

A hyphen makes an inclusive range and a comma separates values. You can combine them in one field, such as 1-5,10.

The rules

0 9-17 * * 1-5

At minute 0, during hours 09, 10, 11, 12, 13, 14, 15, 16, 17, on Mon, Tue, Wed, Thu and Fri. Every hour from 9 to 17 on weekdays.

First runs after 1 Jan 2027 (UTC): Fri, 01 Jan 2027, 09:00 · Fri, 01 Jan 2027, 10:00 · Fri, 01 Jan 2027, 11:00

0 0 1,15 * *

At 00:00 UTC, on the 1st and 15th of the month. The 1st and the 15th at midnight.

First runs after 1 Jan 2027 (UTC): Fri, 15 Jan 2027, 00:00 · Mon, 01 Feb 2027, 00:00 · Mon, 15 Feb 2027, 00:00

0 8,12,18 * * *

At minute 0, during hours 08, 12, 18. Three times a day.

First runs after 1 Jan 2027 (UTC): Fri, 01 Jan 2027, 08:00 · Fri, 01 Jan 2027, 12:00 · Fri, 01 Jan 2027, 18:00

0 0 9 ? * MON-WED,FRI

At 09:00 UTC, on Mon, Tue, Wed and Fri. Monday to Wednesday and Friday.

First runs after 1 Jan 2027 (UTC): Fri, 01 Jan 2027, 09:00 · Mon, 04 Jan 2027, 09:00 · Tue, 05 Jan 2027, 09:00

Using a range when you mean exactly two values: 9-21 runs every hour from 9 to 21, while 9,21 runs twice.
Wrapping a range past the end (22-2). Cron does not wrap; use 22-23,0-2.

Are ranges inclusive?

Yes. 9-17 includes both 9 and 17.