CronKit

Cron expression to run every 12 hours

To schedule a job to run every 12 hours, use this cron expression:

0 */12 * * *
On the hour, every 12 hours

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

Adjust it

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.

Other common schedules

Run every minute
* * * * *
Run every 5 minutes
*/5 * * * *
Run every 10 minutes
*/10 * * * *
Run every 15 minutes
*/15 * * * *
Run every 30 minutes
*/30 * * * *
Run every hour
0 * * * *

See the full breakdown on the 0 */12 * * * page.