using System;

public class Program

{

    public static void Main()

    {

        string utcTime = "2015-04-22T13:47:02"; 

        //string utcTime = "2015-04-22 1:47:02 pm"; 

        var cstZone = TimeZoneInfo.FindSystemTimeZoneById("Central Standard Time");

        DateTime centralTime = TimeZoneInfo.ConvertTimeFromUtc(Convert.ToDateTime(utcTime), cstZone); 

        Console.WriteLine("Central: {0}", centralTime);

        Console.WriteLine(" "); 

        DateTime utc = TimeZoneInfo.ConvertTimeToUtc(Convert.ToDateTime(centralTime), cstZone); 

        Console.WriteLine("Central to utc {0}", utc); 

        Console.WriteLine(" "); 

        var pacificZone = TimeZoneInfo.FindSystemTimeZoneById("Pacific Standard Time");

        Console.WriteLine(pacificZone); 

        Console.WriteLine("Pacific {0}", 

                     TimeZoneInfo.ConvertTimeFromUtc(utc, pacificZone));

​

​

    }

}