property InsideZoom.StartDate as Date
Returns the date where the zoom unit begins.

TypeDescription
Date A Date-Time expression that specifies the starting date of the inside zoom unit.
By default, the StartDate property indicates the date being used when the Add method is called, or the same as DateTime parameter of the InsideZoom event. The EndDate property indicates the ending date of the unit. If the chart's time scale is changed, the StartDate and the EndDate of the InsideZoom objects are not changed accordingly to the new base level.