Different Date format in Sap script for VF03

Hi,

We are using VF03 to print the document. For one Payer the Date format is coming as MM.DD.YYYY which is perfect but for another user it is coming as wierd value. When we check in the code one place there was a Write statement for this.

For one payer the write statement is converting as DD.MM.YYYY and for other payer it is YYYY/MM/DD.

what was the actual problem and what could be the solution.