AWS SDK for .NET Documentation
PreferredMaintenanceWindow Property
AmazonAmazon.ElastiCache.ModelModifyReplicationGroupRequestPreferredMaintenanceWindow Did this page help you?   Yes   No    Tell us about it...
The weekly time range (in UTC) during which replication group system maintenance can occur. Note that system maintenance may result in an outage. This change is made immediately. If you are moving this window to the current time, there must be at least 120 minutes between the current time and end of the window to ensure that pending changes are applied.
Declaration Syntax
C#
public string PreferredMaintenanceWindow { get; set; }

Assembly: AWSSDK (Module: AWSSDK) Version: 1.5.60.0 (1.5.60.0)