Yes, the simplest way would be to just check the last modified date of a file generated by the project.
To reduce the chance of a mistake, I would suggest using a separate file for this because an output file can be accidentally modified if viewed in Excel (if it’s a spreadsheet) or a text editor (if it’s a text file).
Alternatively, you can write a log file with all project runs. The “Export to file” action can append new lines to an existing file.
Here is a sample reusable project that logs every project that called it. Just insert a “Call” action that calls this project into any project which execution time needs to be logged. It creates/appends log records:
execution-log.morph (2.3 KB)