diff --git a/Classes/TimeConverter.cs b/Classes/TimeConverter.cs
index dd5bf4e0..135129a3 100644
--- a/Classes/TimeConverter.cs
+++ b/Classes/TimeConverter.cs
@@ -1,4 +1,11 @@
-using System;
+// ===============================
+// AUTHOR       : Carl Nathan Mier
+// EMAIL        : carlnathanmier@gmail.com
+// CREATE DATE  : January 28, 2020
+// PURPOSE      : Luxoft exam task
+//==================================
+
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
@@ -9,7 +16,142 @@ public class TimeConverter : ITimeConverter
     {
         public string convertTime(string aTime)
         {
-            throw new NotImplementedException();
+            //split the time string into hours, minutes, and seconds
+            var time = aTime.Split(':');
+            
+            var yellowLamp = int.Parse(time[2]) % 2 == 0 ? "Y" : "O";
+
+            var hours = int.Parse(time[0]);
+            string firstLine = "";
+            #region get this first line
+            switch (hours / 5)
+            {
+                case 0: 
+                    firstLine = "OOOO";
+                    break;
+                case 1:
+                    firstLine = "ROOO";
+                    hours -= 5;
+                    break;
+                case 2:
+                    firstLine = "RROO";
+                    hours -= 10;
+                    break;
+                case 3:
+                    firstLine = "RRRO";
+                    hours -= 15;
+                    break;
+                case 4:
+                    firstLine = "RRRR";
+                    hours -= 20;
+                    break;
+                default:
+                    throw new Exception("hours input is out of bounds!");
+            }
+            #endregion
+
+            string secondLine = "";
+            #region get the second line
+            switch (hours)
+            {
+                case 0: secondLine = "OOOO";
+                    break;
+                case 1: secondLine = "ROOO";
+                    break;
+                case 2: secondLine = "RROO";
+                    break;
+                case 3: secondLine = "RRRO";
+                    break;
+                case 4: secondLine = "RRRR";
+                    break;
+            }
+            #endregion
+            
+            var minutes = int.Parse(time[1]);
+            string thirdLine = "";
+            #region get the third line
+            switch (minutes / 5)
+            {
+                case 0:
+                    thirdLine = "OOOOOOOOOOO";
+                    break;
+                case 1:
+                    thirdLine = "YOOOOOOOOOO";
+                    minutes -= 5;
+                    break;
+                case 2:
+                    thirdLine = "YYOOOOOOOOO";
+                    minutes -= 10;
+                    break;
+                case 3:
+                    thirdLine = "YYROOOOOOOO";
+                    minutes -= 15;
+                    break;
+                case 4:
+                    thirdLine = "YYRYOOOOOOO";
+                    minutes -= 20;
+                    break;
+                case 5:
+                    thirdLine = "YYRYYOOOOOO";
+                    minutes -= 25;
+                    break;
+                case 6:
+                    thirdLine = "YYRYYROOOOO";
+                    minutes -= 30;
+                    break;
+                case 7:
+                    thirdLine = "YYRYYRYOOOO";
+                    minutes -= 35;
+                    break;
+                case 8:
+                    thirdLine = "YYRYYRYYOOO";
+                    minutes -= 40;
+                    break;
+                case 9:
+                    thirdLine = "YYRYYRYYROO";
+                    minutes -= 45;
+                    break;
+                case 10:
+                    thirdLine = "YYRYYRYYRYO";
+                    minutes -= 50;
+                    break;
+                case 11:
+                    thirdLine = "YYRYYRYYRYY";
+                    minutes -= 55;
+                    break;
+                default:
+                    throw new Exception("minutes input is out of bounds!");
+
+            }
+            #endregion
+
+            string fourthLine = "";
+            #region get the fourth line
+            switch (minutes)
+            {
+                case 0:
+                    fourthLine = "OOOO";
+                break;
+                case 1:
+                    fourthLine = "YOOO";
+                    break;
+                case 2:
+                    fourthLine = "YYOO";
+                    break;
+                case 3:
+                    fourthLine = "YYYO";
+                    break;
+                case 4:
+                    fourthLine = "YYYY";
+                    break;
+            }
+            #endregion
+
+            //combine them all together, then return the result
+            return $"{yellowLamp}\r\n{firstLine}\r\n{secondLine}\r\n{thirdLine}\r\n{fourthLine}";
+
+            //look, ma! no loops! (or complex expensive algorithms)
+
         }
     }
 }