fix handling of 12 PM

Author: MoralCode

opening_hours/models/time.py

@@ -144,7 +144,7 @@ def get_as_military_time(self):
 			pass
 
 		elif self.is_pm():
-			hours = hours + 12
+			hours = (hours + 12) if hours <= 11 else 12
 
 		return Time(hours, self.minutes, time_type=TimeType.MILITARY)