1: using System;

   2: using System.Collections.Generic;

   3: using System.Linq;

   4:  

   5: static void Main(string[] args)

   6: {

   7:     var times = new List<string>

   8:                     {

   9:                         "18 APR 6:30 AM",

  10:                         "14 MAR 4:50 PM",

  11:                         "17 APR 3:15 PM",

  12:                         "14 MAR 11:25 AM",

  13:                         "22 OCT 11:25 PM"

  14:                     };

  15:  

  16:     #region Appended

  17:     

  18:     var temp = new List<string>();

  19:  

  20:     // Split the string then add in year value into new string.

  21:     // The new string format can be converted to a DateTime type.

  22:     // Add new string into a new collection.

  23:     for (var i = 0; i < times.Count; i++)

  24:     {

  25:         var splitTime = times[i].Split(' ');

  26:         var newTimeFormat = splitTime[0] + " " + splitTime[1] + " 2012 " + splitTime[2] + " " + splitTime[3];

  27:  

  28:         temp.Add(newTimeFormat);

  29:     }

  30:  

  31:     #endregion

  32:  

  33:     #region Updated

  34:  

  35:     var list = temp.Select(Convert.ToDateTime).ToList();

  36:     // The above line is equilevant to the line below.

  37:     // var list = times.Select(t => Convert.ToDateTime(t)).ToList();

  38:  

  39:     #endregion

  40:  

  41:     list.Sort(DateTime.Compare);

  42:     // The above line is equilevant to the line below.

  43:     // list.Sort((d1, d2) => DateTime.Compare(d1, d2));

  44:    

  45:     foreach (var date in list)

  46:     {

  47:         Console.WriteLine(date);

  48:     }

  49: }