In GanttSchedule, you can not change the WeekBeginsOn day, the default value is Sunday. You can set FirstDayOfWeek of CultureUICulture and CurrentCulture to change the WeekBegingsOn.
The following code example explains how to define the CultureInfo for WeekBegingsOn as Monday.
The following screenshot displays the default WeekBeginsOn day as Sunday.
The following screenshot displays the WeekBeginsOn day as Monday.
This page will automatically be redirected to the sign-in page in 10 seconds.