Cron job every hour at half past
30 * * * * At 30 minutes past the hour
Typical use: spreading load away from the top of the hour. Try it below — change any field and see the next runs in your timezone.
At 30 minutes past the hour
Valid
- 1Sun, Sep 27, 2026, 4:30 PM
- 2Sun, Sep 27, 2026, 5:30 PM
- 3Sun, Sep 27, 2026, 6:30 PM
- 4Sun, Sep 27, 2026, 7:30 PM
- 5Sun, Sep 27, 2026, 8:30 PM
- 6Sun, Sep 27, 2026, 9:30 PM
- 7Sun, Sep 27, 2026, 10:30 PM
- 8Sun, Sep 27, 2026, 11:30 PM
- 9Mon, Sep 28, 2026, 12:30 AM
- 10Mon, Sep 28, 2026, 1:30 AM
Field by field
| Field | Value | Meaning |
|---|---|---|
| Minute | 30 | minute 30 |
| Hour | * | every hour |
| Day of month | * | every day |
| Month | * | every month |
| Day of week | * | every day |
The same schedule on every platform
The five fields mean the same thing everywhere, but each scheduler wraps them differently — and AWS and Quartz number weekdays from 1 (Sunday), not 0.
30 * * * * /path/to/script.sh >> /var/log/job.log 2>&1spec:
schedule: "30 * * * *"GitHub ActionsRuns in UTC.
on:
schedule:
- cron: '30 * * * *'AWS EventBridgeEventBridge weekdays are 1–7 (1 = Sunday) and one day field must be ?.
cron(30 * * * ? *)Quartz (Java)Seconds first; weekdays 1–7 with 1 = Sunday.
0 30 * * * ?Spring @ScheduledSpring adds a seconds field but keeps Unix weekday numbers.
@Scheduled(cron = "0 30 * * * *")[TimerTrigger("0 30 * * * *")]Running a job every hour at half past
What is the cron expression for every hour at half past?
30 * * * *. In plain English: at 30 minutes past the hour. It works in standard 5-field cron — Linux crontab, Kubernetes and GitHub Actions.How do I schedule a job every hour at half past in AWS EventBridge?
Use
cron(30 * * * ? *). EventBridge needs six fields (a year at the end), a ? in one of the day fields, and numbers weekdays 1–7 starting on Sunday.What timezone does "30 * * * *" run in?
Cron uses the server's timezone. Kubernetes CronJobs default to the controller's timezone (set
spec.timeZone on 1.27+), GitHub Actions and AWS EventBridge rules always use UTC. Use the timezone picker above to see the next runs in your own time.