Date Format: Change Format To Mm/dd/yyyy

I have txtboxes in which I write date in format dd/mm/yyyy but if I want to put date in cell correctly from this textbox in need to declare event on exit -change format to mm/dd/yyyy and then it puts date in desired format which is dd/mm/yyyy and my regional settings are English(uk)

Is there a way to put any date format in textbox and in cell there will always be format dd/mm/yyyy or at least if date is entered in format dd/mm/yyyy that also in cell the same format is putted