Abstract: A document metadata analysis system may analyze a digital document's metadata structure to identify consistencies or inconsistencies in the metadata. The analysis system may further compare a group of documents to identify consistencies or inconsistencies across multiple documents. The analysis system may analyze a metadata structure to identify time, date, and place parameters, then attempt to normalize the time and date parameters to a consistent time, such as local time. Various clustering techniques may be used to group parameters together, then populate metadata time, date and time-zone offset parameters that may be unpopulated. Seeding techniques may be used to populate the some parameters with a probable parameter value, then various clustering techniques may be used to further populate the parameter values. The metadata from multiple documents may be utilized for an additional seeding mechanism and may be compared against each other to further populate unpopulated parameter values.