diff --git a/time_zone_conversion/README.md b/time_zone_conversion/README.md
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+# Time Zone Conversion
+
+This is a python script that converts a time from one time zone to another. The possible time
+zones considered are Eastern, Central, Mountain, or Pacific.
+
+---
+
+## Steps to Run
+
+1. Clone/Download this repository
+```
+git clone clone_path
+```
+2. Run the program using command
+```
+time_zone.py
+```
+---
+
+## Input 
+The user enters the time in the usual American way, such as 3:48pm or 11:26am. The first time zone the user enters is that of the original time and the second is the desired time zone.
+
+---
+
+## Output
+<img src="output.PNG">
diff --git a/time_zone_conversion/output.PNG b/time_zone_conversion/output.PNG
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diff --git a/time_zone_conversion/time_zone.py b/time_zone_conversion/time_zone.py
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+class InvalidHours(Exception):
+    """Invalid"""
+    pass
+
+
+class InvalidMins(Exception):
+    """Invalid"""
+    pass
+
+
+# Taking user input
+starting_zone = input("Enter starting zone: ")
+time = input("Enter time: ")
+end_zone = input("Enter desired time zone: ")
+
+lst = time.split(":")
+hours1 = int(lst[0])
+mins1 = int(lst[1][:2])
+ampm = lst[1][2:]
+
+# Exception handling
+try:
+    if hours1 >= 12:
+        raise InvalidHours
+except InvalidHours:
+    print("Invalid Hours")
+    exit()
+
+try:
+    if mins1 >= 60:
+        raise InvalidMins
+except InvalidMins:
+    print("Invalid Minutes")
+
+# Time conversion according to zone
+if starting_zone == "CST":
+    hours1 = hours1 + 6
+    pass
+elif starting_zone == "EST":
+    hours1 = hours1 - 10
+    pass
+elif starting_zone == "MST":
+    hours1 = hours1 + 7
+    pass
+elif starting_zone == "PST":
+    hours1 = hours1 + 8
+
+if hours1 > 12:
+    hours1 = hours1 - 12
+    if ampm == 'am':
+        ampm = 'pm'
+    elif ampm == 'pm':
+        ampm = 'am'
+elif hours1 < 0:
+    hours1 = hours1 + 12
+    if ampm == 'am':
+        ampm = 'pm'
+    elif ampm == 'pm':
+        ampm = 'am'
+
+if end_zone == "CST":
+    hours1 = hours1 - 6
+elif end_zone == "EST":
+    hours1 = hours1 + 10
+elif end_zone == "MST":
+    hours1 = hours1 - 7
+elif end_zone == "PST":
+    hours1 = hours1 - 8
+
+if hours1 > 12:
+    hours1 = hours1 - 12
+    if ampm == 'am':
+        ampm = 'pm'
+    elif ampm == 'pm':
+        ampm = 'am'
+elif hours1 < 0:
+    hours1 = hours1 + 12
+    if ampm == 'am':
+        ampm = 'pm'
+    elif ampm == 'pm':
+        ampm = 'am'
+
+# Result
+print('Time: ' + str(hours1) + ":" + str(mins1) + ampm)