glad this helped.
i would use a timestamp and then when displaying it just as a date format as per what eric said and display as just a date.
i usually keep it as a timestamp when displaying as it shows the exact time and date they submitted into the database which can be useful if for example one user added a note to the database at 14:00 and another at 14:30 so it would show when ordering by whatever asc or desc.
thanks