executionTime

The time the execution ran as a datetime object that is saved in the following format: yyyy-MM-dd'T'HH:mm:ss'Z'

For State Manager associations, this timestamp represents when the compliance status was captured and reported by the Systems Manager service, not when the underlying association was actually executed on the managed node. To track actual association execution times, use the DescribeAssociationExecutionTargets command or check the association execution history in the Systems Manager console.