Cron expression in AWS CloudWatch: How to run once a week

Question

Just want to know that in Amazon CloudWatch is it possible to run a rule according to a schedule that is defined in cron expression. But the attempts were rejected by the CloudWatch with the below message:

"Parameter ScheduleExpression is not valid..."

0 16 * * SUN *

0 16 * * 6 *

0 16 * * SUN-SUN *

0 16 * * 6-6 *

Answer 1

 You can try with "0 16 ? * 1 *", where the question mark says that it must no be executed every day, so it must check the weekday values.

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