Only supported for ArcGIS Image Server from version 10.0 onward. The layer/table must also support querying and exporting maps based on time.

The TimeExtent Property provides metadata about the layer’s service. If temporal information is available (meaning it is not null/Nothing) for the geographic data in the layer’s service, then developers can take advantage of using the Map.TimeExtent Property to display snapshots of the temporal data that cover a specified time period (aka. TimeExtent). Once common use case is to bind a TimeSlider Control with the a Map Control to provide an interactive user experience of showing how geographic temporal data changes over time.