Cron Expression 0 * * * * Meaning
Cron expression 0 * * * * means At minute 0.
Cron expression 0 * * * * means run once every hour at minute 0. Use this guide to interpret the pattern quickly and deploy it safely in Linux crontab, GitHub Actions, and Kubernetes.
Cron Expression
Common use cases
- Hourly analytics aggregation and KPI snapshots
- Regular queue cleanup and retry processing
- Scheduled token refreshes and cache updates
- Top-of-hour notifications and reporting tasks
How to use this cron schedule
The meaning of cron expression 0 * * * * is straightforward once you split the fields: minute 0, any hour, any day of month, any month, and any weekday. That translates to one execution at the top of every hour, 24 times per day. If you searched for cron expression 0 * * * * meaning, this is the exact behavior you should expect. In 2026, it remains one of the most common schedules for systems that need frequent updates without the overhead of running every few minutes.
This expression works well when your work unit is small and predictable. Typical examples include hourly metrics rollups, API sync checks, and lightweight reporting pipelines. Before production rollout, confirm your job usually finishes well under sixty minutes so runs do not overlap. If overlap is possible, use idempotent writes, a lock, or a queue-based worker model. For cloud schedulers that default to UTC, document the timezone in your runbook so operators know when each top-of-hour run should occur in local business time.
A practical operations pattern is to pair the hourly cron with simple success and duration alerts. That gives your team quick visibility when a run is delayed or fails repeatedly. Keep each hourly job focused on one concern instead of bundling multiple unrelated tasks into one command. Clear ownership and narrow scope make incident response faster. After validating this expression here, open the main builder to customize intervals or weekday filters if your environment needs a stricter cadence.
Want to customize this schedule?
Open it in the visual builder to tweak the expression interactively.
Open in BuilderNeed to monitor this cron job?
Cronhub tracks your scheduled jobs and alerts you if they fail or run late.
Platform usage examples
# Edit your crontab
crontab -e
# Add this line to run expression 0 * * * * meaning
0 * * * * /usr/bin/php /var/www/html/script.php
# Or run a shell script
0 * * * * /home/user/scripts/job.sh >> /var/log/job.log 2>&1# .github/workflows/scheduled.yml
name: Scheduled Job
on:
schedule:
- cron: '0 * * * *'
jobs:
run:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- name: Run job
run: echo "Running expression 0 * * * * meaning"apiVersion: batch/v1
kind: CronJob
metadata:
name: my-scheduled-job
spec:
schedule: "0 * * * *"
jobTemplate:
spec:
template:
spec:
containers:
- name: job
image: my-image:latest
restartPolicy: OnFailureRelated developer tools
More free tools for engineering workflows that pair with scheduled jobs:
Frequently asked questions
What is the cron expression for expression 0 * * * * meaning?
The cron expression is 0 * * * *. Cron expression 0 * * * * means run once every hour at minute 0. Use this guide to interpret the pattern quickly and deploy it safely in Linux crontab, GitHub Actions, and Kubernetes.
How do I schedule a cron job to run expression 0 * * * * meaning in Linux?
Open your crontab with "crontab -e" and add a new line: 0 * * * * /path/to/your/script.sh — this schedules your script to run expression 0 * * * * meaning. Save and exit; the cron daemon picks up the change immediately.
What does the cron expression "0 * * * *" mean?
Cron expression 0 * * * * means run once every hour at minute 0. Use this guide to interpret the pattern quickly and deploy it safely in Linux crontab, GitHub Actions, and Kubernetes.
Can I use "0 * * * *" in GitHub Actions?
Yes. In your workflow YAML, set the schedule trigger: on: schedule: - cron: '0 * * * *'. GitHub Actions uses standard 5-field Unix cron syntax, so this expression works as-is.