I don't know about the Titanium. But using javascript here is the way.
var time = new Date().getTime(); // Get milliseconds
var date = new Date(time);// Milliseconds to date
alert(date.toString());
var time = 1396250512;
var date = new Date(time);// Milliseconds to date
alert(date.toString());
Get time only
var time = 1396250512;
var date = new Date(time);// Milliseconds to date
var t=date.toString().split(" ");
alert(t[4]);