What is the cron expression for first day of every month?

0 0 1 * *. In words: At 00:00, on day 1 of the month. It runs in the time zone of the machine or service that runs it.

How do I write it for Quartz, Spring, GitHub Actions or AWS?

GitHub Actions: 0 0 1 * *. Kubernetes CronJob: 0 0 1 * *. Quartz: 0 0 0 1 * ?. Spring @Scheduled: 0 0 0 1 * *. AWS EventBridge: cron(0 0 1 * ? *).

Can I check when it runs next?

Yes. The tool above lists the next runs in your time zone or any other, shows a month calendar of runs, and warns about runs the clocks skip or repeat. Nothing is uploaded.

omnibus

SchedulerTime zone

Cron expression (Linux crontab)

Minute0–59

Hour0–23

Day of month1–31

Month1–12 or JAN–DEC

Day of week0–7 (0 and 7 = Sunday) or SUN–SAT

Common schedules

How to write it in Linux crontab

0 0 1 * * /path/to/command

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Cron First Day of the Month

Runs at 00:00 on the 1st of every month. The same as @monthly.

0 0 1 * *

At 00:00, on day 1 of the month.

Field by field

Field	Value	Means
Minute	0	minutes 0
Hour	0	hours 0
Day of month	1	days 1
Month	*	every month
Day of week	*	every day

Other common schedules

Build or explain any cron expression →

Frequently asked questions

What is the cron expression for first day of every month?: 0 0 1 * *. In words: At 00:00, on day 1 of the month. It runs in the time zone of the machine or service that runs it.
How do I write it for Quartz, Spring, GitHub Actions or AWS?: GitHub Actions: 0 0 1 * *. Kubernetes CronJob: 0 0 1 * *. Quartz: 0 0 0 1 * ?. Spring @Scheduled: 0 0 0 1 * *. AWS EventBridge: cron(0 0 1 * ? *).
Can I check when it runs next?: Yes. The tool above lists the next runs in your time zone or any other, shows a month calendar of runs, and warns about runs the clocks skip or repeat. Nothing is uploaded.

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