Our platform provides date stamping for the completion of pre-test assessments, practice exercises, and post-evaluation assessments. Writing application activities are not date stamped.
Note, however, that we do not track time zones and that our records are stamped in UTC (maybe a little confusing, but here's an explanation and how to convert to your time). For example, there would be an 8 hour difference from UTC to Pacific time, so depending on the time of day of when assignments are completed, there could be a slight discrepancy between when a student says she completed her work and the actual date that appears on the teacher end.