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Cron Expression: First day of every month
Use 0 0 1 * * — At 00:00 on day 1 of the month.
Cron Expression: First day of every month
RunsFields: minute 0 · hour 0 · day 1 · month * · weekday *
| # | Date | Time |
|---|---|---|
| 1 | Tue, Dec 1, 2026 | 00:00 |
| 2 | Fri, Jan 1, 2027 | 00:00 |
| 3 | Mon, Feb 1, 2027 | 00:00 |
| 4 | Mon, Mar 1, 2027 | 00:00 |
| 5 | Thu, Apr 1, 2027 | 00:00 |
| 6 | Sat, May 1, 2027 | 00:00 |
| 7 | Tue, Jun 1, 2027 | 00:00 |
| 8 | Thu, Jul 1, 2027 | 00:00 |
Standard 5-field cron (Linux crontab, Kubernetes CronJob, GitHub Actions — which runs in UTC). When both day-of-month and day-of-week are set, the job runs when EITHER matches.
Where to use it
- Linux crontab:
0 0 1 * * /path/to/script.sh - GitHub Actions:
schedule: - cron: '0 0 1 * *'(runs in UTC) - Kubernetes CronJob:
schedule: "0 0 1 * *"
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