A proper guide on Parivartan yoga and its effects - Jothishi

https://jothishi.com/a-proper-guide-on-parivartan-yoga-and-its-effects/ Parivartan Yoga happens when the lords of 2 hours are exactly placed in each other houses. In the stages, the two different planets receive a truly mutual strength.

https://jothishi.com/a-proper-guide-on-parivartan-yoga-and-its-effects/