Cron Job Every 5 Minutes During Business Hours

Cron expression for every 5 minutes during business hours

*/5 9-17 * * 1-5

Every 5 minutes, between 09:00 and 17:59, Monday through Friday. It runs 108 times on each matching day, on 261 days a year (28,188 runs).

Runs every 5 minutes from 09:00 to 17:55, Monday to Friday. Ranges in cron are inclusive, so 9-17 includes the whole 17:00 hour, and the last run of the day is at 17:55. Use 9-16 to stop at 16:55, or add a second line 0 17 * * 1-5 to finish exactly at 17:00.

Field by field

Examples

crontab

Run crontab -e and add:

*/5 9-17 * * 1-5 /usr/local/bin/job.sh >> /var/log/job.log 2>&1

Kubernetes CronJob

apiVersion: batch/v1
kind: CronJob
metadata:
  name: my-job
spec:
  schedule: "*/5 9-17 * * 1-5"
  timeZone: "Etc/UTC"          # Kubernetes 1.27+
  concurrencyPolicy: Forbid    # skip a run if the last one is still going
  jobTemplate:
    spec:
      template:
        spec:
          containers:
            - name: job
              image: ghcr.io/acme/job:1.0
          restartPolicy: OnFailure

GitHub Actions

on:
  schedule:
    - cron: '*/5 9-17 * * 1-5'   # UTC

GitHub evaluates schedules in UTC, and runs can start several minutes late at busy times.

systemd timer

# /etc/systemd/system/job.timer
[Unit]
Description=Run job.service every 5 minutes during business hours

[Timer]
OnCalendar=Mon..Fri *-*-* 09..17:00/5:00
Persistent=true

[Install]
WantedBy=timers.target

Enable it with systemctl enable --now job.timer, and check the next runs with systemd-analyze calendar "Mon..Fri *-*-* 09..17:00/5:00". Persistent=true runs a missed job after downtime, which cron can’t do.

AWS EventBridge

cron(0/5 9-17 ? * MON-FRI *)

EventBridge cron has six fields (the last is the year), uses ? in either the day-of-month or the day-of-week field, and numbers weekdays from 1 (Sunday) to 7. Rules run in UTC; EventBridge Scheduler also accepts a time zone.

Similar schedules: every few minutes

• Every minute: * * * * *
• Every 30 seconds: * * * * *
• Every 2 minutes: */2 * * * *
• Every 3 minutes: */3 * * * *
• Every 5 minutes: */5 * * * *
• Every 10 minutes: */10 * * * *
• Every 15 minutes: */15 * * * *
• Every 20 minutes: */20 * * * *
• Every 30 minutes: */30 * * * *
• Every 45 minutes: */45 * * * *

Have a different schedule? Paste any expression into the Cron Expression Generator, or browse all cron examples.

Sources

• POSIX: crontab
• crontab(5) manual page
• Kubernetes docs: CronJob
• GitHub Actions docs: schedule event
• systemd.time(7): calendar events
• AWS docs: EventBridge Scheduler cron expressions

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Frequently asked questions