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Cron Expression Builder & Explainer

Parse any cron line, get plain-language explanations, validate syntax, preview next runs, and copy AWS cron()/rate() forms — no telemetry, instant deep links.

Standard cron

Plain-language summary

At 05:00 every day

Next runs (UTC)

  1. Mon, Oct 27, 5:00 AM UTC
  2. Tue, Oct 28, 5:00 AM UTC
  3. Wed, Oct 29, 5:00 AM UTC
  4. Thu, Oct 30, 5:00 AM UTC
  5. Fri, Oct 31, 5:00 AM UTC

Field breakdown

Minute
minute 0
Hour
hour 5
Day of month
every day of month
Month
every month
Day of week
every day of week

Why teams link here

Cron syntax differs between POSIX, Kubernetes, and AWS. Tinapps keeps everything private, explains schedules in plain English, and gives you copy-ready cron(), rate(), or crontab snippets with a single shareable URL.

Usage ideas

  • Embed deep links like /dev/cron?expr=0+5+*+*+* into runbooks so oncall engineers see the schedule instantly.
  • Use AWS tabs to ensure lambda and EventBridge syntax is correct before pushing to Terraform.
  • Paste a suspect cron job, get next-run previews, and spot timezone mistakes before they page you.