2018-11-19-19-34.rar

The string appears to be a specific timestamped filename (November 19, 2018, at 7:34 PM) associated with archives of deleted or archived internet content.

The internal data is usually in JSON or CSV format. You may need Python (using the pandas library) to clean the data and make it readable. 2018-11-19-19-34.rar

Look for collections like the Pushshift Reddit Archives. The string appears to be a specific timestamped