diff --git a/scripts/concatenate_date_time.py b/scripts/concatenate_date_time.py
new file mode 100755
index 0000000..7574ba8
--- /dev/null
+++ b/scripts/concatenate_date_time.py
@@ -0,0 +1,54 @@
+#! /usr/local/bin/python3
+
+import os
+import sys
+import csv
+from datetime import datetime
+
+
+def get_file_size(file_path):
+    stats = os.stat(file_path)
+    return stats.st_size
+
+
+def seconds_to_digital_time(seconds):
+    hours = seconds / 3600
+    return round(hours, 2)
+
+
+def convert_to_utc(date: str, time: str) -> str:
+    datetime_obj = datetime.strptime(f"{date} {time}", "%Y-%m-%d %H:%M:%S")
+    utc_string = datetime_obj.strftime("%Y%m%dT%H%M%SZ")
+    return utc_string
+
+
+def calculate_decimal_duration(utc1, utc2):
+    utc1_object = datetime.strptime(utc1, "%Y%m%dT%H%M%SZ")
+    utc2_object = datetime.strptime(utc2, "%Y%m%dT%H%M%SZ")
+
+    time_difference = utc2_object - utc1_object
+    difference_seconds = time_difference.total_seconds()
+    return seconds_to_digital_time(difference_seconds)
+
+
+if __name__ == "__main__":
+    path = sys.argv[1]
+    updated_rows = []
+    with open(path, mode="r") as csv_file:
+        reader = csv.DictReader(csv_file)
+        line = 0
+        for row in reader:
+            if line > 0:
+                start = convert_to_utc(row["start_date"], row["start_time"])
+                end = convert_to_utc(row["end_date"], row["end_time"])
+                duration = calculate_decimal_duration(start, end)
+                updated_rows.append(
+                    [row["activity"], start, end, duration, row["description"]]
+                )
+            line += 1
+    with open("updated.csv", mode="w") as updated_file:
+        writer = csv.writer(updated_file)
+        for element in updated_rows:
+            writer.writerow(element)
+    file_size = get_file_size("./updated.csv")
+    print(f"Wrote data to new file. Name: updated.csv. Size: {file_size} bytes")