schedule
The schedule for a one-time (at timestamp format) or recurring (cron format) scheduled action. Schedule invocations must be separated by at least one hour. Times are in UTC.
Format of at timestamp is
yyyy-mm-ddThh:mm:ss. For example,2016-03-04T17:27:00.Format of cron expression is
(Minutes Hours Day-of-month Month Day-of-week Year). For example,"(0 10 ? * MON *)". For more information, see Cron Expressions in the Amazon CloudWatch Events User Guide.