A date input is a user interface element where the user can type or select a date in a predefined format.
The date format depends on an ISO definition for each country and the preference of use within the application.
The format of the date may vary depending on language, region, country or customer. It is a good practice to give to the user some type of hint about the date format and in many cases.
mm/dd/yyyy.dd/mm/yyyy.yyyy/mm/dd.