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AWS EventBridge
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AWS EventBridge cron guide
Use AWS EventBridge cron and rate expressions safely, including UTC behavior, ? syntax, and year fields.
AWS EventBridge supports both cron(...) and rate(...) expressions. Use rate(...) for simple intervals and cron(...) for wall-clock schedules.
Format
cron(minutes hours day-of-month month day-of-week year)AWS cron has six fields and is evaluated in UTC.
Example
cron(0 9 ? * MON-FRI *)This runs at 09:00 UTC Monday through Friday.
Notes
- Use
?in day-of-month when day-of-week is specific. - Use
?in day-of-week when day-of-month is specific. - Prefer
rate(5 minutes)for simple intervals. - Convert business-local schedules to UTC carefully.