try this
var date = new Date();
$.ajax(
{
type: "POST",
url: "/Group/Refresh",
contentType: "application/json; charset=utf-8",
data: "{ 'MyDate': " + date.getTimezoneOffset() + " }",
success: function (result) {
//do something
},
error: function (req, status, error) {
//error
}
});
In C#
DateTime.Now.ToUniversalTime().AddMinutes(double.Parse(MyDate)).ToString();