Preparing to light the lamps to inaugurate the Sivathondan. Ammachi lights the lamps. Well as you know, I am not that critical about their techniques as much as the system known as the tropical zodiac. The western system makes good use of aspects and even progressions are worthy of study. However by not using an Ayanamsha they cannot come to correct conclusions.
Hindu astrology has far superior techniques to make accurate predictions from a horoscope.
With Vedic astrology we can look at different aspects of the person from three different ascendants. We can look at the positions of the planets from the ascendant rising, the Moon or the Sun. Even if the birthtime is unknown, a very accurate reading can be given by the skilled astrologer from the position of the planets from the natal Moon. With experience rectification occurs automatically. In Vedic astrology we have so many excellent tools like Muhurta, Ashtakarvarga, Dashas, Gochara and Divisional charts to come to our conclusions.