Windows contacts

I am not sure if there is another community to put this.

I have entered my contacts. When I go the to the folder display and show
all deatils and add the columns of phone numbers and birthdate, the DETAILS,
on some of the contacts, it does not show the correct birthdate that is in
the contact. It is off by one day from what is on the contact. In
addition, on the DETAILS, it shows 8:00PM with the birthdate even though
there is not a field for time of birth.

My questions are:

How do I get the birthdate to show correctly and how do I get rid of the
time?

At first I thought it was because I imported the file, but it still happens
when I enter a new contact.

I would appreciate any help.

Thanks.