Monthly at 9 AM Cron Expression
Runs on the 1st of every month at 09:00.
Expression
0 9 1 * *Try it in the tester →Field Breakdown
0
minute
9
hour
1
day-of-month
*
month
*
day-of-week
minuteat minute 0
hourat 9 AM (hour 9)
day-of-monthat the 1st
monthevery month (1–12)
day-of-weekevery weekday (0=Sun – 6=Sat)
How It Works
Day-of-month pinned to 1, hour pinned to 9 — fires once per month at 09:00 on the 1st, regardless of weekday.
Example Run Times
- Jan 1 09:00:00
- Feb 1 09:00:00
- Mar 1 09:00:00
- Apr 1 09:00:00
- May 1 09:00:00
Frequently Asked Questions
Why fire at 9 AM instead of midnight?
Reports that humans will read are easier to monitor during business hours. Anomalies surface immediately instead of waiting until the next morning.