Thank you for your post, and I apologize for the late reply.
Do you have any other Layouts that use the same date fields in the footer? Are these date fields used as global storage? If you create a new blank layout and put the same date fields in the footer, do you still get the same problem? (If not, then you could have a corrupt layout.) Are you viewing the data as a Form, List or Table?
Any other information you can provide to hep me replicate the problem would be appreciated.