It is not possible to choose time or Datetime fields to display in Salesforce Reports.
Only created date and last modified date fields are available. Time or Datetime fields are not supported.
A workaround for this is to create a Datetime formula field and insert CreatedDate in the formula wizard. The new Datetime formula field is accessible in the reports.
Salesforce Documentation: Include Created Date AND TIME in Lead History Reports
Send us your feedback: We're always looking for advice to help improve our Knowledge Base! Please let us know if this article was helpful or provide feedback on how we can improve your experience here.