diff --git a/projects/005-units-of-time-again/python/main.py b/projects/005-units-of-time-again/python/main.py
index e69de29..0dfacb7 100644
--- a/projects/005-units-of-time-again/python/main.py
+++ b/projects/005-units-of-time-again/python/main.py
@@ -0,0 +1,29 @@
+
+day_sec = 86400
+hours_sec = 3600
+minutes_sec = 60
+# i = 2
+
+# user input
+
+n_seconds = int(input("Insert a number of seconds:"))
+
+# calculation Day
+
+n_day = n_seconds // day_sec
+n_seconds = n_seconds % day_sec
+
+# calculation Hours
+
+n_hours = n_seconds // hours_sec
+n_seconds = n_seconds % hours_sec
+
+# calculation Minutes
+
+n_minutes = n_seconds // minutes_sec
+n_seconds = n_seconds % minutes_sec
+
+
+print(f'{n_day}:{n_hours:02}:{n_minutes:02}:{n_seconds:02}')  # f-string ":02" indica il numero di digits totali mettendo uno zero davanti ai numeri con cifra singola
+# ALTERNATIVA: print(f'{(int(n_day))}:{int(n_hours):0{i}}:{int(n_minutes):0{i}}:{int(n_seconds):0{i}}')
+