preferredMaintenanceWindow
The weekly time range (in UTC) during which automated cluster maintenance can occur.
Format: ddd:hh24:mi-ddd:hh24:mi
Default: A 30-minute window selected at random from an 8-hour block of time per region, occurring on a random day of the week. For more information about the time blocks for each region, see Maintenance Windows in Amazon Redshift Cluster Management Guide.
Valid Days: Mon | Tue | Wed | Thu | Fri | Sat | Sun
Constraints: Minimum 30-minute window.