ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Desktop.Mapping Namespace / MapView Class / Time Property
Example Version

Time Property (MapView)
Gets or sets the time range visible in the map view.
Syntax
public TimeRange Time {get; set;}
Remarks
This property is null when there are no time aware layers in the map. When the Time property is not null, but both the Start and End properties of the TimeRange are null this means the map view is showing all time. This is equivalent to disabling time in the map view. Setting this property to null when there are time aware layers in the map will set both the start and end properties of the TimeRange to null.
Example
Step forward in time by 1 month
public void StepMapTime()
{
  //Get the active view
  MapView mapView = MapView.Active;
  if (mapView == null)
    return;

  //Step current map time forward by 1 month
  TimeDelta timeDelta = new TimeDelta(1, TimeUnit.Months);
  mapView.Time = mapView.Time.Offset(timeDelta);
}
Disable time in the map.
MapView.Active.Time.Start = null;
MapView.Active.Time.End = null;
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.
See Also