preferred
The daily time range during which automated backups are created if automated backups are enabled, using the `BackupRetentionPeriod` parameter. For more information, see Backup Window in the Amazon RDS User Guide. Constraints:
Must be in the format
`hh24:mi-hh24:mi`.Must be in Universal Coordinated Time (UTC).
Must not conflict with the preferred maintenance window.
Must be at least 30 minutes. Amazon Aurora Not applicable. The daily time range for creating automated backups is managed by the DB cluster.