0 0,12 * * *. The hour list 0,12 selects midnight and noon. To run at other fixed clock times, change the hour list — but if the two times have different minutes, you need two cron lines (see the dedicated FAQ).View future cron matches in a calendar
Showing next 1000 cron schedules
0 0,12 * * *
The hour list 0,12 selects midnight and noon — two firings a day. For different times that share a minute (e.g. 06:00 and 18:00), use 0 6,18 * * *. For times that don't share a minute (e.g. 08:00 and 17:30), use two separate cron lines.
See the dedicated guide for the full breakdown: Cron every day.
Paste it into the editor above to see the next runs on a calendar.
0 6,18 * * * — 06:00 and 18:00 every day0 8,20 * * * — 08:00 and 20:00 every day30 9,17 * * * — 09:30 and 17:30 (same minute → one cron line works)0 0,12 * * * uses standard 5-field cron syntax, so it works in:
crontab — 0 0,12 * * * /path/to/script.shvercel.json.cron(...) with day-of-week as ? and a year field.0) and append day-of-week ?.`0 0,12 * * *`. Paste this into any cron-compatible scheduler (Linux crontab, AWS EventBridge, Vercel cron, Quartz, node-cron, robfig/cron) to run a job twice a day (midnight and noon).
The editor above shows the next 30+ runs on a calendar in your local timezone, plus a plain-English description. If the calendar matches your intent, the cron is correct.
It uses standard 5-field cron syntax, so yes — Linux crontab, AWS EventBridge (with the additional `?` and year fields), Vercel cron jobs, Quartz Scheduler, node-cron, robfig/cron, and Kubernetes CronJob all accept it. Vercel's free Hobby plan caps the minimum frequency at once-per-day; the Pro plan removes that cap.
Most schedulers will start the new run anyway, leading to overlap. To prevent this, wrap the command with `flock -n /tmp/myjob.lock /path/to/script.sh` on Linux, or set `concurrencyPolicy: Forbid` on Kubernetes CronJob. Vercel cron and AWS EventBridge let you configure concurrency at the platform level.
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