code: def actual_age_solar(birthday, today=None):
      
      birthday = LCalendars.cast_date(birthday, date)
      if today:
          today = LCalendars.cast_date(today, date)
      else:
          today = date.today()
      return today.year - birthday.year - ((today.month, today.day) < (birthday.month, birthday.day))
docs: See more at https://stackoverflow.com/questions/2217488/age-from-birthdate-in-python/9754466#9754466
      :param birthday:
      :param today:
      :return: