There is a closed question which is similar to or identical to this question: Getting date modified for a feature class within a file geodatabase via arcpy
Looking at a file geodatabase featureclass in ArcCatalog, there is a Modified attribute showing the date that the featureclass was last changed:
This is not the same as the Modified date for its parent file geodatabase (which means that I can't obtain the featureclass 'modified' value via the operating system):
I'm limited to using the older ArcMap/ArcCatalog version of ArcPy, and I can't see where to find the 'modified on' date in the documentation, eg http://desktop.arcgis.com/en/arcmap/latest/analyze/arcpy-functions/featureclass-properties.htm
How can I access the Modified date via ArcPy?