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Editorial Team
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Asked: 2026-05-26T17:55:23+00:00

Given a Quartz Scheduler CronTrigger expression like 0 0/15 11-15 ? * MON-FRI, how

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Given a Quartz Scheduler CronTrigger expression like “0 0/15 11-15 ? * MON-FRI”, how is that parsed?

I am correct in assuming the 11-15 does not mean “between 11 and 15” but “when the hour is 11-15, inclusive” – i.e. the expression will trigger every 15 minutes starting at 11:00 and ending at 15:45? Or will it end at 14:45? Or maybe 15:00?

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1 Answer

  1. Editorial Team

    According to Quartz documentation, the “-” modifier is inclusive (for both the start and end values):

    “-” used to specify ranges. For example, “10-12” in the hour field means “the hours 10, 11 and 12”.

    Also, the explanation of this example expression points to the same conclusion:

    0 0-5 14 * * ? Fire every minute starting at 2pm and ending at 2:05pm, every day

    The hours should match 15 as well, and since 0/15 will still be in effect for the hour 15, the last execution will be 15:45.

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