Titanium Appcelerator date format

I am using date picker in my application
When i click button it take selected date from date picker and set it to text field

 set.addEventListener('click',function(e){
      textfield.setValue(picker.value);
 });

It set date as 2016-02-29 18:30:00 +0000 but i want it as 24-02-2016

How can i change date format?