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Cron on the First Day of Every Month: 0 0 1 * *
At 00:00, on day 1 of the month. See the next run times and similar cron schedules.
At 00:00, on day 1 of the month.
Next runs (your time zone)
Cheat sheet
┌───────── minute (0–59) │ ┌─────── hour (0–23) │ │ ┌───── day of month (1–31) │ │ │ ┌─── month (1–12 or JAN–DEC) │ │ │ │ ┌─ day of week (0–7 or SUN–SAT; 0 and 7 = Sunday) * * * * * * any , list (1,15) - range (1-5) / step (*/10) @hourly @daily @weekly @monthly @yearly
When both day-of-month and day-of-week are set, standard cron runs on days matching either one. Servers usually run cron in UTC; the times above are in your browser's time zone.
📚 Official sources: crontab(5) manual
We build every tool from the official rules and re-check them when they change. Always confirm with the official source before you rely on a result.
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What 0 0 1 * * means
At 00:00, on day 1 of the month. Minutes: 0 · hours: 0.
Similar schedules
0 6 1 */3 *: 06:00 on the 1st every 3 months0 0 1,15 * *: the 1st and 15th of every month@monthly: the same as 0 0 1 * *
Questions people ask
What do the 5 cron fields mean?+
Minute (0–59), hour (0–23), day of month (1–31), month (1–12) and day of week (0–7, where 0 and 7 are Sunday).
What does */5 mean?+
Every 5 units of that field: */5 in the minute field runs at minutes 0, 5, 10 … 55.
Why does my job run on extra days?+
If you set both day-of-month and day-of-week, standard cron runs when either one matches, not both.