View future cron matches in a calendar
Showing next 1000 cron schedules
0 9 * * 1
Cron has no native “every other week” — the day-of-week field repeats weekly. The portable workaround: schedule weekly and gate the work on ISO week parity. The expression above runs every Monday; the wrapper script exits on odd ISO weeks.
See the dedicated guide for the full breakdown: Cron every week.
Paste it into the editor above to see the next runs on a calendar.
0 9 * * 1 — weekly Monday 09:00 — gate with `[ $(($(date +%V) % 2)) -eq 0 ] && script`0 9 1,15 * * — approximately biweekly: every 1st and 15th of the month at 09:000 9 * * 1,4 — twice a week (Mon and Thu) — see the twice-a-week guide0 9 * * 1 uses standard 5-field cron syntax, so it works in:
crontab — 0 9 * * 1 /path/to/script.shvercel.json.cron(...) with day-of-week as ? and a year field.0) and append day-of-week ?.`0 9 * * 1`. Paste this into any cron-compatible scheduler (Linux crontab, AWS EventBridge, Vercel cron, Quartz, node-cron, robfig/cron) to run a job biweekly (every other Monday at 09:00).
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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