OffPeakWindow
class OffPeakWindow
A custom 10-hour, low-traffic window during which OpenSearch Service can perform mandatory configuration changes on the domain. These actions can include scheduled service software updates and blue/green Auto-Tune enhancements. OpenSearch Service will schedule these actions during the window that you specify.
If you don't specify a window start time, it defaults to 10:00 P.M. local time.
For more information, see Defining off-peak maintenance windows for Amazon OpenSearch Service.