In what timezone do AWS EventBridge cron schedules run?

All AWS CloudWatch Events and EventBridge cron expressions run exclusively in Coordinated Universal Time (UTC).

Updated: August 2026 • Verified v1.2

Crontab to AWS CloudWatch & EventBridge Schedule Converter

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AWS Cron: cron(Minutes Hours Day-of-month Month Day-of-week Year)

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Understanding Your Results

Converts 5-field crontabs into valid AWS 6-field `cron(...)` expressions with automatic `?` wildcard resolution, generating AWS CLI `put-rule` commands, Terraform IaC, and AWS CDK snippets.

Practical Guidance & Next Steps

AWS EventBridge rules always evaluate cron expressions in UTC. You cannot specify both Day-of-month and Day-of-week; one must always be `?`.

What is this?

A cloud infrastructure utility that converts standard Linux crontabs into AWS-compliant 6-field EventBridge and CloudWatch schedule expressions.

How does it work?

1. Enter standard 5-field cron or select a preset. 2. View the generated AWS `cron(...)` expression with valid `?` wildcard placement. 3. Copy AWS CLI commands, Terraform resources, or AWS CDK TypeScript code.

Why use it?

Prevents invalid schedule expression errors in AWS CloudWatch and EventBridge deployments.

Technical Scope & Calculation Limitations

Generates AWS EventBridge / CloudWatch standard 6-field cron expressions.

Frequently Asked Questions

AWS EventBridge enforces a strict rule: you cannot specify both Day-of-Month and Day-of-Week simultaneously. If you specify one, the other must be set to the question mark `?` wildcard.

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