There are methods to find the time of birth through reverse engineering like from events in the past which are of a one time nature, like death of father or mother or first sexual experience or any other matter of significance which will help identify the time of birth. And your very looks can sometimes give us clues to where some planets are in the zodiac. For all that you should contact an astrologer in person and spend hours with him for questions and answers. It is called Birth Time Rectifications which are being practised by many as a business in the world of astrology.