DEV TOOLBOX · CRON DIALECT
>cronpreview

Build, validate, and preview cron expressions across Unix, AWS EventBridge, GitHub Actions, Vercel, Kubernetes, Quartz, and Spring — with timezone-correct next-run previews.

Recipe · unix5

Weekly on Sunday at 02:00

0 2 * * 0

Runs once a week, Sunday morning at 02:00 — quiet hours for most production traffic.

Why this pattern

Weekly cleanup, weekly aggregation, weekly cache flush. Sunday 02:00 is the calmest moment of the week for most production systems. 0 2 * * 0 reads as "Sunday at 02:00" — note that Unix cron accepts both 0 and 7 for Sunday.

Variations

  • Every Saturday at 02:00: 0 2 * * 6
  • Twice a week (Wed and Sun): 0 2 * * 3,0
  • Every Monday at 09:00: 0 9 * * 1

Platform notes

Quartz uses day-of-week 1=SUN..7=SAT, so the same intent is 0 0 2 ? * 1. AWS EventBridge follows the same 1=SUN convention but additionally requires ? in one of day-of-month or day-of-week. Use the dialect picker to see both forms side-by-side.

Try it

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