The cron expression for the first of the month at 9 AM is 0 9 1 * *. Runs once a month, on the 1st at 9 AM.
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About 0 9 1 * *
0 9 1 * * — Runs once a month, on the 1st at 9 AM.
Cron reads the five fields as minute hour day month weekday. For this schedule that breaks down as:
| Field | Position | Matches |
|---|---|---|
0 | minute | 0 |
9 | hour | 9 |
1 | day of month | 1 |
* | month | every month |
* | day of week | every day of the week |
New to cron? Read the syntax reference or the FAQ.
Use it in crontab or GitHub Actions
The snippets below use UTC. The crontab timezone setting requires a compatible daemon such as Cronie. GitHub Actions defaults to UTC and accepts a timezone on each schedule. For other timezones, Kubernetes, EventBridge Scheduler, or Vercel, use the export menu in the calculator above.
crontab
# At 09:00 AM, on day 1 of the month # CRON_TZ requires a cron implementation that supports it, such as Cronie. CRON_TZ=UTC 0 9 1 * * /path/to/command
GitHub Actions workflow
# At 09:00 AM, on day 1 of the month
on:
schedule:
- cron: '0 9 1 * *'
timezone: "UTC"