From another answer on Stackoverflow is a conversion from Javascript date to .net DateTime:
long msSinceEpoch = 1260402952906; // Value from Date.getTime() i
If you use MVC with razor
-----Razor/C#
var dt1 = DateTime.Now.AddDays(14).Date;
var dt2 = DateTime.Now.AddDays(18).Date;
var lstDateTime = new List();
lstDateTime.Add(dt1);
lstDateTime.Add(dt2);
---Javascript
$(function() {
var arr = []; //javascript array
@foreach (var item in lstDateTime)
{
@:arr1.push(new Date(@item.Year, @(item.Month - 1), @item.Day));
}
Good luck