Save date and time from dropdown in sql database table using javascripts

I will describe here to save hh and mm format dropdown value to database. Firstly , I have two dropdown first is Hours and second is Minutes .

When you will fill data then press F12 or inspect element . I will showing it value following as:

Here , you will show $scope._MinuteDataTypeModal contains value 30 and next image show Hours data as:

And I am concatenate both modal using ":" to time format.

In above picture, $scope.VisitTimeModal show actual time format that is "10:30:00".

And in c# or server side code automatically get data in class using get set property . And in below picture show highlighted section that is time is save in database.