General Principle of Parivarthan Yoga

A parivartana yoga occurs when planet A is in the sign of planet B, and planet B is in the sign of planet A.

Parivartana or Mutual exchange Yoga is one of the most powerful, influential, strong and special planetary combination in charts and it is very simple to understand. The results good or bad will be according to the position and strength of the houses, occupied by both the ruling planets involved, throughout life, especially in their periods and sub periods.

A Parivartan or Parivartana Yoga or mutual exchange Yoga in an individual’s astrological birth chart is a special planetary combination, formed due to mutual exchange of the
(ruling planets) involved in it, and thus the power of these two occupied houses is increased.The results of  most of Parivartana Yoga(combinations) are extremely good.

In other words, if two ruling planets or sign lords mutually exchange their positions and occupy each others house, Parivartana Yoga or Sthan Parivartana yoga is formed. In western astrology, it is called reception.