The "Submitted Time" field is a reserved field for recording the time of form submission. If you wanted to record another time, you will need to have a date/time question in the form itself.
Yes, the time we are recording is in the field 'Flight Date' see example above. The date we entered is 13 May 2018. However the analyse results for 'Flight Date' is reporting back results based on 'Submitted Time' not the actual Flight Date field. (note that we manually entered the date 13 May on Aug 10)
Are you referring to the time filter on the Analyze page? Currently, that is restricted to the submitted date. We plan to provide more filtering options (such as those available on the data page) in a future release.