AfroTools / Developer Tools / Cron Builder

Build cron schedules that survive real deployment targets.

Compose a five-field cron expression, preview runs in African time zones, and export snippets for Linux crontab, GitHub Actions, Kubernetes CronJobs, or AWS EventBridge with the warnings developers usually learn the hard way.

Next run preview Platform snippets Timezone warnings EventBridge conversion

Expression

Five-field POSIX cron: minute, hour, day of month, month, day of week.

Builder Controls

Use presets, then fine tune the fields directly.

Generated Snippet

Deployment-ready starter for the selected platform.

        

      

    


    
  




  

    

      

        

          Schedule deployment check
          
Build the expression, then verify the scheduler that will run it

          
Compose five-field cron, inspect next run times, choose a platform, and copy a handoff snippet with timezone and platform caveats visible.

        

        

          Local schedule builder
          
No production scheduler is configured or tested by this page.

        

      

      

        

          
Primary task

          
  • Choose presets or build a minute, hour, day, month, and weekday expression.
  • Preview upcoming runs and switch platform notes for Linux, GitHub, Kubernetes, or EventBridge.
  • Copy the expression or deployment snippet into your runbook.

        

        

          
Result and export

          
  • Cron expression and plain-English cadence.
  • Next-run preview in the selected timezone context.
  • Copyable platform snippet and schedule brief.

        

        

          
Before you use it

          
  • Confirm UTC versus local time before deployment.
  • Review DST, minimum interval, missed-run, and concurrency behavior.
  • Use the target platform docs for field count and special character differences.

        

        

          
Assumptions and freshness

          
Scheduler behavior varies by platform and may change. Verify with the live scheduler or CI environment before relying on a production job.

        

      

      

        Report tool issue
        
Planning utility only. It is not an official provider, legal, tax, security, filing, compliance, or live-data service. Keep sensitive content local unless you intentionally export or share it.

      

    

  















  

    Why does AWS EventBridge output look different?
    
EventBridge scheduled rules use six fields wrapped in cron(...), including a year field. It also requires a question mark in either day-of-month or day-of-week when the other field is constrained. This builder converts simple five-field schedules and flags ambiguous cases.

  

  

    Are the next run times exact?
    
They are a browser-side preview based on the selected timezone and common cron semantics. Always verify in the target scheduler before production, especially around daylight saving changes, missed runs and platform-specific retry behavior.

  

  

    What is the biggest cron mistake?
    
The most common mistake is assuming every platform uses the same timezone and day matching rules. GitHub, Kubernetes, Linux cron and EventBridge all have their own deployment details.