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

SourceModifiedTime Property (CIMGISProject)
Gets or sets the time the project was last modified.
Syntax
public TimeInstant SourceModifiedTime {get; set;}
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.1 or higher.
See Also