onDemandRotationStartDate

Identifies the date and time that an in progress on-demand rotation was initiated.

KMS uses a background process to perform rotations. As a result, there might be a slight delay between initiating on-demand key rotation and the rotation's completion. Once the on-demand rotation is complete, KMS removes this field from the response. You can use ListKeyRotations to view the details of the completed on-demand rotation.