The file name of the report includes the date and time stamp as a series of numbers. For example, if you have a report with a file name Style List Reports 11222021 34332944.pdf, the first set of numbers is the date the report is generated in the format MMddYYYY. The second set of numbers is the time the report is generated in the format HHmmss.sss with split seconds and zeroes omitted. For the example, 34332944 means 3:43:32.944 AM.