this.DayPilotScheduler1.DataSource = table;
this.DayPilotScheduler1.StartDate=algus; //2009-01-01
this.DayPilotScheduler1.DataStartField="START_DATE"; //2009-01-10 //correct
this.DayPilotScheduler1.DataEndField = "VALID_UNTIL_DATE"; //2009-01-31
this.DayPilotScheduler1.DataValueField = "FLAT_OP";
this.DayPilotScheduler1.DataResourceField = "FLAT_ID";
this.DayPilotScheduler1.DataTextField = "TENANT_NAME";
this.DayPilotScheduler1.Days = lopp.Day; //31
this.DayPilotScheduler1.CellDuration = 1440;

But scheduler shows 31 day as fee day