How cron expressions are evaluated

Owned by Gebsun
Last updated: Mar 29, 2021 by Mario Thor
1 min read

Cron Expression format

Cron expression has the following five fields format:

<Minutes 0-59> <Hours 0-23> <Day of Month 1-31> <Months 0-11> <Day of Week 0-6>

  • "Months" field accepts aliases: JAN, FEB, MAR, APR, MAY, JUN, JUL, AUG, SEP, OCT, NOV, DEC
  • "Day of Week" field accepts aliases: SUN, MON, TUE, WED, THU, FRI, SAT
  • '*' wildcard can be used as a field value.


Examples

Examples to run task

  1. Every Friday at 18:00 type: '0 18 * * 5'
  2. From Monday to Friday at 18:00 type: '0 18 * * MON-FRI'
  3. On Tuesday and Thursday at 18:00 type: '0 18 * * TUE,THU'
  4. Every first day of month at 18:00 type: '0 18 1 * *'

Details and support


Your cron task might be scheduled up to 30 minutes difference.

<Minutes> field is currently is ignored and tasks are run every half and full hour.


If something is bothering you please report an issue or send support request to support@gebsun.com