Tuesday and Saturday are considered inauspicious though they are valid for surgical operations. One should note that in Indian Astrology, the weekday is said to commence from sunrise. Of the twenty-seven 'nakshtras', Bharani and Krittika are avoided for all works as they are said to be presided over by Yama, the lord of death. In 'yoga', the 6th,9th,10th,17th and 27th are inauspicious. Of the 'karanas', 'bhadra' is the most unwanted while 'bava' and 'thaithula' are very auspicious.

After taking into account twenty-one 'mahadoshas'(great evils), the astrologer suggests good muhurthas attaching great importance to 'lagna' (ascendent or the rising cusp) and position of the moon. The moon is to be avoided in the 6th,8th and the 12th houses at any cost. Thus fixing a muhurtha is a time-consuming arduous task for an Indian astrologer. For normal purposes, people take into account one or more of 'tithi' or 'nakshatra' or 'chandra bala' or 'tara bala' or 'rahu kalam' or'durmuhurt' or 'thyaja kala'. While in Tamil Nadu, South India, reliance on 'Rahu Kalam' is very common, in North India, people follow a similar one called 'choughadia' for routine works. However, when a muhurta is fixed, the 'panchaka' (five-source energy) should be strong.

The author is a professional chemical engineer having expertise in neutral spirits distillation. He is a free-lance web developer and has a flair for writing articles on a diverse range of subjects including the occult viz., Astrology. He spends a day in the week on studying his clients' Horoscopes. His site based on Electional Astrology i.e., Muhurta is quite popular.