ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Core.CIM Namespace / CIMProjectItem Class / SourceModifiedTime Property

SourceModifiedTime Property (CIMProjectItem)
Gets or sets modified time of the item as a time instant.
Syntax
public TimeInstant SourceModifiedTime {get; set;}
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.0 or higher.
See Also