**To create a maintenance window that runs only once** The following ``create-maintenance-window`` creates a new maintenance window that only runs one time at the specified date and time. :: aws ssm create-maintenance-window \ --name test \ --schedule "at(2019-05-14T15:55:00)" \ --duration 5 \ --cutoff 2 \ --allow-unassociated-targets Output:: { "WindowId": "mw-01234567890abcdef" } For more information, see `Maintenance Windows <https://docs.aws.amazon.com/systems-manager/latest/userguide/systems-manager-maintenance.html>`_ in the *AWS Systems Manager User Guide*.