Cron Expression: Twice a Day
The expression is 0 0,12 * * *. Paste it above to read it in English and preview the next local run times.
The expression
0 0,12 * * * runs a job twice a day: at 00:00 and 12:00.
Field by field
The 0 minute pins it to the top of the hour. 0,12 in the hour field is a comma list — two specific hours, midnight and noon.
Common variations
Twice a day at 6am and 6pm: 0 6,18 * * *. Three times a day: 0 8,14,20 * * *. Twice a day on weekdays: 0 0,12 * * 1-5.
FAQ
How do I pick the two times?
List the hours in the hour field with a comma, e.g. 0 6,18 * * * for 6am and 6pm.
Can I run three or four times a day the same way?
Yes — just add more hours to the comma list, e.g. 0 6,12,18 * * *.
How do I limit it to weekdays?
Set the weekday field, e.g. 0 0,12 * * 1-5.