Yoga in the Chart of Eclipse Relative to Natal Lagna

Hi Ernst,

When casting a chart for the moment of an eclipse, is there any significance to be given to a parivartana dhainya yoga showing up on that chart, when measured relative to someone's natal lagna sign?

Would that dhainya yoga be active for that person around the time of the month before and/or after that eclipse? Or all the way until the next eclipse season?

Also, on an unrelated note, are dhainya yogas in the vargas less prominent and powerful in someones life than ones in the main D1 chart?

Thanks,

S.