CronKit

0 */12 * * * explained

On the hour, every 12 hours

On the hour, every 12 hours
Runs at midnight and noon every day. · 5-field cron

Next 5 runs (UTC)

#Run time (UTC)When
1Sat, Jun 20, 2026, 00:00:00 UTCin 9h 13m
2Sat, Jun 20, 2026, 12:00:00 UTCin 21h 13m
3Sun, Jun 21, 2026, 00:00:00 UTCin 1d 9h
4Sun, Jun 21, 2026, 12:00:00 UTCin 1d 21h
5Mon, Jun 22, 2026, 00:00:00 UTCin 2d 9h

Try it in your timezone

0 */12 * * *
Get this as JSON (developer API)
curl "https://cron.wrapper-agency.com/api/v1/cron?expr=0%20*%2F12%20*%20*%20*&tz=UTC"

Free cron API — no key during beta. Parsing is standard 5-field (or 6-field with seconds) cron, computed with cron-parser.

How to read this expression

FieldValueMeaning
Minute0exactly 0
Hour*/12every 12 step
Day of month*every value
Month*every value
Day of week*every value

Related schedules

* * * * *
Every minute
*/5 * * * *
Every 5 minutes
*/10 * * * *
Every 10 minutes
*/15 * * * *
Every 15 minutes
*/30 * * * *
Every 30 minutes
0 * * * *
Every hour

FAQ

Is "0 */12 * * *" a valid cron expression?
Yes — it parses as a standard 5-field cron expression: On the hour, every 12 hours.
How do I use it?
Paste it into your crontab, CI scheduler, or job runner. Need a different schedule? Edit the fields in the builder above or browse all common cron expressions.

Looking for a phrase instead? See every minute, every 5 minutes, every 10 minutes, every 15 minutes.