Home › Convert › AWS EventBridge to Apache Airflow
Convert AWS EventBridge cron to Apache Airflow
AWS EventBridge expressions look similar to Apache Airflow, but the differences matter. Paste yours below; the result is checked against the original run times.
What changes from AWS EventBridge to Apache Airflow
- AWS EventBridge numbers weekdays 1-7 starting on Sunday. Apache Airflow starts on Sunday = 0, so every weekday number is reduced by one.
- Apache Airflow does not use
?, so it is replaced with*. - Apache Airflow has no year field. A specific year would be dropped, so the schedule would repeat every year; the converter warns you.
- AWS EventBridge requires both day fields to match; Apache Airflow fires when either does. Schedules that restrict both are flagged.
Worked examples
| Schedule | AWS EventBridge | Apache Airflow |
|---|---|---|
| every minute | * * * * ? * | * * * * * |
| every 5 minutes | */5 * * * ? * | */5 * * * * |
| every 10 minutes | */10 * * * ? * | */10 * * * * |
| every 15 minutes | */15 * * * ? * | */15 * * * * |
| every 30 minutes | */30 * * * ? * | */30 * * * * |
| every hour | 0 * * * ? * | 0 * * * * |
| every 2 hours | 0 */2 * * ? * | 0 */2 * * * |
| every 3 hours | 0 */3 * * ? * | 0 */3 * * * |
Field layout and time zones
minute (0-59), hour (0-23), day-of-month (1-31), month (1-12), day-of-week (1-7, 1 = Sunday), year (1970-2199, required).
EventBridge rules always run in UTC. If you want a local time zone with DST support, use EventBridge Scheduler instead.
minute (0-59), hour (0-23), day-of-month (1-31), month (1-12), day-of-week (0-7, 0 and 7 = Sunday).
Airflow defaults to UTC. On a time-zone-aware DAG a cron schedule follows wall-clock time, so a daily 00:00 US/Eastern run moves between 04:00 and 05:00 UTC across daylight saving changes.
Go the other way
Convert Apache Airflow to AWS EventBridge, or open the AWS EventBridge builder or the Apache Airflow builder.
Frequently asked questions
How do I convert a AWS EventBridge cron expression to Apache Airflow?
Paste it into the converter above with AWS EventBridge as the source and Apache Airflow as the target. For example, * * * * ? * becomes * * * * *.
Is every AWS EventBridge expression convertible to Apache Airflow?
Yes for the common schedules we tested (30 of 30), though unusual expressions with special characters might need manual review.
Does Apache Airflow run in the same time zone as AWS EventBridge?
Not necessarily. Conversion changes the syntax, not the time zone. Check where each system evaluates the schedule before you rely on the same clock times.