public List <User> ZodiacFriends(IFriendsBy i_FriendsBy, List <User> i_allFriends)
        {
            List <User> friendsByZoaidc = new List <User>();

            foreach (User friend in i_allFriends)
            {
                eZodiac friendsZodiacSigns = GetZodiac(DateTime.ParseExact(friend.Birthday, "MM/dd/yyyy", CultureInfo.InvariantCulture));
                if (i_FriendsBy.FriendsBy(friendsZodiacSigns.ToString()))
                {
                    friendsByZoaidc.Add(friend);
                }
            }

            return(friendsByZoaidc);
        }