The detailed version of this article is featured in the book ‘Important Yogas in Vedic Astrology Part-2’.
According to prevalent definition of Parvat Yoga in Vedic astrology; if in a horoscope, only benefic planets are placed in Kendra/central houses (first, fourth, seventh, tenth) and the sixth as well as eighth house is vacant, Parvat Yoga is formed in the horoscope. Parvat Yoga can bless the native with good results related to health, lifespan, profession, marriage, education, money, wealth, prosperity, luxuries, reputation, fame and many other good things.
In real practice, Parvat Yoga is not seen producing such results when only the aforementioned conditions are met. Hence more conditions should be met in order for this yoga to be formed effectively in a horoscope. Looking at the first condition, the benefic planets should be functionally benefic for one such horoscope. It means the planets which are naturally benefic but functionally malefic in a horoscope may not form Parvat Yoga in such horoscope. Looking at the second condition, at least three Kendra houses should be occupied by benefic planets, for the formation of Parvat Yoga in a horoscope.
Taking an example, suppose Jupiter is placed in the tenth house of a horoscope in Aquarius, Venus is placed in the fourth house in Leo and the sixth as well as eighth house is vacant. Jupiter and Venus are natural benefic planets. However, Jupiter is functionally malefic in this case whereas Venus is partly benefic and partly malefic in horoscopes with Taurus ascendant. The concept of a planet being partly benefic and partly malefic has been explained in the book ‘Pitra Dosh – Ancestors are Calling (Revised Edition)’. In this case, Parvat Yoga may not be formed in the horoscope though the primary conditions are met.
Taking another example, suppose benefic Jupiter is placed in the first house of a horoscope in Pisces and benefic Mercury is placed in the seventh house in Virgo. No other planet is placed in any Kendra house and the sixth as well as eight house is vacant. In this case, Parvat Yoga may not be formed in the horoscope, since only two out of four Kendra houses are occupied by benefic planets.
Suppose benefic Mars is placed in the tenth house in Sagittarius, in the same horoscope. In this case, Parvat Yoga may be formed since three out of four Kendra houses are occupied by functionally benefic planets. Suppose benefic Moon is placed in the fourth house of this horoscope in Gemini. In this case, an even better version of Parvat Yoga may be formed since all four Kendra houses are occupied by functionally benefic planets.
Once the formation of Parvat Yoga is confirmed in a horoscope, the next factor to check is its strength. The strength of this yoga is calculated through the placements of planets involved in its formation in various signs, nakshatras and navamshas; as well as through the overall theme of horoscope and running times (Mahadashas).
Taking an example, suppose benefic Jupiter is placed in the first house of a horoscope in Pisces, in Leo navamsha of Uttarabhadrapada nakshatra and benefic Mercury is placed in the seventh house in Virgo, in Taurus navamsha of Hasta nakshatra. Suppose benefic Mars is placed in the tenth house in Sagittarius, in Leo navamsha of Poorvashada nakshatra and benefic Moon is placed in the fourth house in Gemini, in Taurus navamsha of Punarvasu nakshatra.
Jupiter, Mercury and Mars are strong in their respective signs whereas Moon may do well or very well in Gemini; depending on its nakshatra and navamsha placements. All four planets are placed in comfortable nakshatras and they are strong in navamshas. Hence strong Parvat Yoga may be formed in this case. As a result, the native may witness benefic results related to most spheres of his life; including health, lifespan, marriage, education, mother, father, children, profession, finances, wealth and authority.
Looking at the running times; when Mahadashas (planetary periods) of malefic planets are in effect; benefic effects of Parvat Yoga may reduce. When Mahadashas of benefic planets other than the ones involved in the formation of this yoga are in effect; benefic effects of this yoga may increase. When Mahadashas of the planets involved in the formation of Parvat Yoga are in effect; the native may witness maximum benefits through this yoga. For instance; in the recent example, the native may benefit the most during Jupiter Mahadasha, Mercury Mahadasha, Mars Mahadasha and Moon Mahadasha.