Angular scope doesn't know about Date
Try to use:
$scope.Date = new Date();
and after:
<div ng-controller="myController"
ng-init="params.datetime = Date"
>Current time: {{params.datetime}}</div>
Demo 1 Fiddle
As an answer for your EDIT,
rewrite Date
as method:
$scope.Date = function(arg){
return new Date(arg);
};
and:
<div ng-controller="myController"
ng-init="params.datetime = Date('Tue Feb 18 2013 00:00:00 GMT+0200 (CEST)')"
>Current time: {{params.datetime}}</div>
Demo 2 Fiddle