Tithi, Weekday, and Nakshatra

A Sun-Moon yoga in this question is the relationship of the two lights, which is the tithi. Purnima is the full Moon, the Moon in the sign opposite the Sun. Amavasya is the dark Moon. A vaar-nakshatra yoga is a muhurta pairing of weekday and lunar mansion, used to judge an hour. Neither limb is more powerful for a life, because neither one numbers the houses. The lagna does that. The nakshatra lord starts the dasha, which may be neither the weekday lord nor the tithi.

Sunday's lord is the Sun even when the Moon is in a Saturn nakshatra. The person lives in Saturn's opening balance while being born on the Sun's day.

The panchanga also has a limb simply called yoga, one of 27, found from the combined motion of the Sun and the Moon. Anuradha is not on that list. Vishkambha, Vyatipata, and Vaidhriti are. People who ask which yoga is more powerful often mix this limb with a birth-chart conjunction and with a muhurta pair. Vyatipata and Vaidhriti are the nitya yogas muhurta treats as severe. A birth during one of them is a panchanga fact. It still does not outrank a strong lagna lord.

For choosing a wedding hour, vaar and nakshatra and tithi are judged together. The powerful hour is the one that satisfies the set, not a winner between two names.

If the question is the native, rank the lagna first, the Moon's nakshatra dasha second, and the tithi or the weekday as color. A Thursday birth, Jupiter's day, does not put Jupiter in the 9th. A Purnima birth brightens the Moon and does not choose the mahadasha. Comparing Sun-Moon yoga with vaar-nakshatra yoga as if one could be the most powerful planet is a category error.

Use the tithi to know the Moon's brightness. Use the weekday to know which graha rules the day of birth. Use the nakshatra to start the 120-year sequence.