public static void Main()
Console.WriteLine("Hello World");
TimeSpan chkFreq = TimeSpan.FromSeconds(1);
Console.WriteLine(DateTime.Now.ToUniversalTime().ToString("yyyy-MM-ddTHH:mm:ss.fffZ"));
Console.WriteLine(DateTime.Now.Add(chkFreq).ToUniversalTime().ToString("yyyy-MM-ddTHH:mm:ss.fffZ"));