Cloud utility
Read any AWS cron expression in plain English
Paste an EventBridge schedule and see exactly when it fires, field by field, with clear errors when the syntax is wrong.
AWS EventBridge Cron Visualizer
Everything runs on your device. Your schedules are never uploaded anywhere.
Six fields: minutes, hours, day-of-month, month, day-of-week, year. The cron(...) wrapper is optional.
Common Schedules
Plain English
Enter a valid expression to see its translation and field breakdown.
Related tools
đź“… Understanding the Timeline
- Six-Step Layout: AWS calendar rules read differently than regular calendars. They look at Minutes, Hours, Day of the month, Month, Day of the week, and Year.
- The Missing Year Trap: Most common online automation tools use only five blocks of time. Forgetting to add that final Year block at the very end is the number one reason setups fail.
âť“ The Question Mark Rule
- Avoid Conflicting Dates: You cannot tell a system to run on "the 15th of the month" and "only on Tuesdays" at the exact same time—dates shift every month, causing a calendar clash.
- The Switch Helper: To fix this, you must tell the system to ignore one of those options by typing a question mark (
?) in whichever date slot you are not using. - Instant Problem Spotter: This tool instantly checks this rule as you type, showing you exactly which slot needs a question mark before you save your settings.