Twice a Month Cron Expression
Runs on the 1st and 15th of every month at midnight.
Expression
0 0 1,15 * *Try it in the tester →Field Breakdown
0
minute
0
hour
1,15
day-of-month
*
month
*
day-of-week
minuteat minute 0
hourat midnight
day-of-monththe 1st and 15th
monthevery month (1–12)
day-of-weekevery weekday (0=Sun – 6=Sat)
How It Works
Day-of-month list `1,15` — fires twice per month at 00:00, on day 1 and day 15.
Example Run Times
- Jan 1 00:00:00
- Jan 15 00:00:00
- Feb 1 00:00:00
- Feb 15 00:00:00
- Mar 1 00:00:00
Frequently Asked Questions
Will this fire 24 times per year?
Yes — exactly 24 runs (12 months × 2 days each).