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Crontab cron expression: on the 1st of every month at midnight
To run a Crontab job on the 1st of every month at midnight, use:
0 0 1 * *At 00:00 UTC, on the 1st of the month.
Your week at a glance
Upcoming runs
| # | Local | UTC | From now |
|---|
Copy-ready code
Why use this schedule
Monthly jobs that start with the calendar month: billing runs, quota resets, monthly reports.
- Monthly billing and invoices
- Resetting monthly usage quotas
- Previous-month reports
First runs, as an example
Starting from 1 January 2027, evaluated in UTC:
| # | Date and time (UTC) |
|---|---|
| 1 | Fri, 01 Jan 2027, 00:00:00 |
| 2 | Mon, 01 Feb 2027, 00:00:00 |
| 3 | Mon, 01 Mar 2027, 00:00:00 |
| 4 | Thu, 01 Apr 2027, 00:00:00 |
| 5 | Sat, 01 May 2027, 00:00:00 |
| 6 | Tue, 01 Jun 2027, 00:00:00 |
On the 1st of every month at midnight in every dialect
| System | Expression |
|---|---|
| Crontab (this page) | 0 0 1 * * |
| Quartz | 0 0 0 1 * ? |
| Spring | 0 0 0 1 * * |
| Kubernetes | 0 0 1 * * |
| AWS EventBridge | 0 0 1 * ? * |
| Jenkins | H 0 1 * * |
| GitHub Actions | 0 0 1 * * |
| node-cron | 0 0 1 * * |
| Apache Airflow | 0 0 1 * * |
| Azure Functions | 0 0 0 1 * * |
| Google Cloud Scheduler | 0 0 1 * * |
Need to translate a different expression? Use the cron converter.
Ready-to-use Crontab config
Drop this into your project. The expression is the one above.
0 0 1 * * /path/to/command >> /var/log/job.log 2>&1The Crontab fields, in order: minute (0-59), hour (0-23), day-of-month (1-31), month (1-12), day-of-week (0-7, 0 and 7 = Sunday).
Things to watch out for in Crontab
- If you set both day-of-month and day-of-week, cron runs when either one matches, not both.
- Fields are minute, hour, day-of-month, month, day-of-week. There is no seconds field, so one minute is the finest resolution.
- Cron runs in the server's local time zone. Check it with the date command, or put CRON_TZ=Asia/Kolkata above the line on cronie-based systems.
The common mistake with this schedule
The month field is 1-12 (January is 1), and the day-of-month field starts at 1, not 0.
Frequently asked questions
How do I run a Crontab job on the 1st of every month at midnight?
Use 0 0 1 * *. At 00:00 UTC, on the 1st of the month.
What is the on the 1st of every month at midnight cron expression in other systems?
Quartz: 0 0 0 1 * ?; Spring: 0 0 0 1 * *; Kubernetes: 0 0 1 * *. The table on this page lists every dialect.
Which time zone does Crontab use for this schedule?
Cron runs in the server's local time zone. Check it with the date command, or put CRON_TZ=Asia/Kolkata above the line on cronie-based systems.