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cron.surf

Convert GitHub Actions cron to crontab

GitHub Actions writes min hour dom mon dow; crontab writes min hour dom mon dow. Paste an expression to convert it. Anything that does not map exactly is flagged with the reason and a workaround.

“At 09:00, Monday through Friday”

To · crontabExact
0 9 * * 1-5
Runs in the system time zone; cronie also reads CRON_TZ=.

Same schedule on other platforms

KubernetesExact
0 9 * * 1-5
Set spec.timeZone, or it uses the controller’s local zone.
AWS EventBridgeExact
cron(0 9 ? * 2-6 *)
cron() with six fields; one day field must be ?. UTC unless you set a time zone.
SpringExact
0 0 9 * * 1-5
Six fields, seconds first; set zone= or it uses the server zone.
QuartzExact
0 0 9 ? * 2-6
Seconds first, Sunday is 1, one day field must be ?.

Next 10 runs

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GitHub Actions vs crontab

GitHub Actionscrontab
Fieldsmin hour dom mon dowmin hour dom mon dow
Sunday00 or 7
Day and weekday both seteither matcheseither matches; both must if one starts with *
Special charactersnonenone
Shortcutsnone@reboot @yearly @monthly @weekly @daily @hourly
Time zoneUTC, or timezone: per entrysystem zone; CRON_TZ= in cronie
Shortest interval5 minutes, best effort1 minute

Common schedules, converted

GitHub Actionscrontab
Every 5 minutes*/5 * * * **/5 * * * *
Every hour0 * * * *0 * * * *
Every 10 minutes*/10 * * * **/10 * * * *
Every 15 minutes*/15 * * * **/15 * * * *
Every 30 minutes*/30 * * * **/30 * * * *
Daily at midnight0 0 * * *0 0 * * *
Daily at 9 am0 9 * * *0 9 * * *
Weekdays at 9 am0 9 * * 1-50 9 * * 1-5
Every Monday0 0 * * 10 0 * * 1
First day of the month0 0 1 * *0 0 1 * *
Every 6 hours0 */6 * * *0 */6 * * *
Every Sunday at midnight0 0 * * 00 0 * * 0
Every 2 hours0 */2 * * *0 */2 * * *
Every 12 hours0 */12 * * *0 */12 * * *
Daily at noon0 12 * * *0 12 * * *
Every Friday0 0 * * 50 0 * * 5
Every quarter0 0 1 */3 *0 0 1 */3 *
Every 3 hours0 */3 * * *0 */3 * * *
Daily at 6 am0 6 * * *0 6 * * *
Daily at 6 pm0 18 * * *0 18 * * *
Twice a day0 */12 * * *0 */12 * * *
Weekdays at 6 pm0 18 * * 1-50 18 * * 1-5
Weekends at 10 am0 10 * * 0,60 10 * * 0,6
15th of the month0 0 15 * *0 0 15 * *
Once a year0 0 1 1 *0 0 1 1 *
Every 20 minutes*/20 * * * **/20 * * * *
Every 4 hours0 */4 * * *0 */4 * * *
Every 8 hours0 */8 * * *0 */8 * * *
Daily at 1 am0 1 * * *0 1 * * *
Daily at 2 am0 2 * * *0 2 * * *
Daily at 3 am0 3 * * *0 3 * * *
Daily at 8 am0 8 * * *0 8 * * *
Every weekday0 0 * * 1-50 0 * * 1-5
Every weekend day0 0 * * 0,60 0 * * 0,6
Every Tuesday0 0 * * 20 0 * * 2
Every Wednesday0 0 * * 30 0 * * 3
Every Thursday0 0 * * 40 0 * * 4
Every Saturday0 0 * * 60 0 * * 6
Every 6 months0 0 1 */6 *0 0 1 */6 *

FAQ

Can every GitHub Actions expression be converted to crontab?

Of the 39 common schedules on this page, all convert exactly. Special characters that crontab lacks are still flagged when you use them.

How is Sunday written in GitHub Actions and crontab?

GitHub Actions: 0. crontab: 0 or 7.

Does the time zone carry over?

The expression has no time zone. GitHub Actions: UTC, or timezone: per entry. crontab: system zone; CRON_TZ= in cronie.