The preferred maintenance window in the format ddd:HH:MM-ddd:HH:MM (UTC). Day must be one of: Mon, Tue, Wed, Thu, Fri, Sat, Sun. For example, Sun:02:00-Sun:06:00. Provide an empty string to let the system choose a window.
The IANA timezone identifier for the maintenance window. Format: Region/City or UTC. For example, America/New_York or UTC.