Cron every 5 hours (uneven) (0 */5 * * *): next runs and syntax

What it is used for

Shown because steps in the hour field restart at midnight; 5 does not divide 24.

Field by field

Field	Value	Matches
Minute	`0`	0
Hour	`*/5`	0, 5, 10, 15, 20
Day of month	`*`	every value
Month	`*`	every value
Day of week	`*`	every value

0 */5 * * * /path/to/job

Next 10 run times

Computed when this page loaded (2026-11-11 02:24 UTC), assuming the scheduler runs in UTC.

#	UTC	Your local time
1	`Wed 2026-11-11 05:00`	-
2	`Wed 2026-11-11 10:00`	-
3	`Wed 2026-11-11 15:00`	-
4	`Wed 2026-11-11 20:00`	-
5	`Thu 2026-11-12 00:00`	-
6	`Thu 2026-11-12 05:00`	-
7	`Thu 2026-11-12 10:00`	-
8	`Thu 2026-11-12 15:00`	-
9	`Thu 2026-11-12 20:00`	-
10	`Fri 2026-11-13 00:00`	-

Things to watch with this schedule

Valid even steps for hours are 1, 2, 3, 4, 6, 8 and 12. For a true 5-hour cycle use a systemd timer with OnUnitActiveSec=5h.
The hour step /5 does not divide 24: it restarts at midnight, so the last gap each day is 4 hours instead of 5.

Kubernetes CronJob

Kubernetes uses the same five fields. Set spec.timeZone (stable since Kubernetes 1.27), otherwise the schedule follows the time zone of kube-controller-manager.

apiVersion: batch/v1
kind: CronJob
metadata:
  name: every-5-hours
spec:
  schedule: "0 */5 * * *"
  timeZone: "Etc/UTC"
  concurrencyPolicy: Forbid
  startingDeadlineSeconds: 300
  jobTemplate:
    spec:
      template:
        spec:
          restartPolicy: OnFailure
          containers:
            - name: job
              image: debian:bookworm-slim
              command: ["/bin/sh", "-c", "/app/run-job.sh"]

GitHub Actions

Workflow schedules use five-field cron in UTC and run only from the default branch. Runs at minute 0 are the most likely to be delayed or dropped when GitHub is busy; an odd minute such as 7 or 23 starts more reliably.

on:
  schedule:
    - cron: '0 */5 * * *'   # UTC

jobs:
  run:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - run: ./run-job.sh

systemd timer

The equivalent OnCalendar= value is *-*-* 00/5:00:00. Check it with systemd-analyze calendar '*-*-* 00/5:00:00', which prints the next elapse time. Persistent=true runs a missed job after downtime, which classic cron never does.

[Unit]
Description=Every 5 hours (uneven)

[Timer]
OnCalendar=*-*-* 00/5:00:00
Persistent=true

[Install]
WantedBy=timers.target

AWS EventBridge

EventBridge rules take six fields (minute, hour, day-of-month, month, day-of-week, year) in UTC; EventBridge Scheduler can use a time zone. One of day-of-month and day-of-week must be ?, and day-of-week runs 1-7 from Sunday, so names are used here.

cron(0 0/5 * * ? *)

Quartz Scheduler (Java)

Quartz adds a leading seconds field and needs ? in either day field; days of the week are 1 (SUN) to 7 (SAT).

0 0 0/5 * * ?

Spring's @Scheduled(cron = ...) also uses six fields, but numbers days of the week 0-7 with Sunday as 0 or 7, like Unix cron; the names shown above work in both.

Related schedules

Every 8 hours 0 */8 * * *
Every 6 hours at a quiet minute 17 */6 * * *
Every hour at half past 30 * * * *
Every 4 hours 0 */4 * * *
Every 3 hours 0 */3 * * *
Every 12 hours 0 */12 * * *
All cron schedules and the field reference
Build a crontab line from this schedule