Dasha means the period in which the timing of events can be calculated. Running Dasha of any planet influences the person’s life and his nature.

Dasha plays a very important role in compatibility between partners. Inimical Dasha always creates tiffs in relationships.

Here we can understand, Dasha effects on person’s life -

As an example, if native is of cancer ascendant but having Sun Dasha, so in this period this native thinks about his own self respect more, or tries to act as leader. Rest results depend upon the placement of Sun in his chart.

But the nature of the planet will reflect in a person's behavior during its Dasha.

Similarly, when two persons who are going to marry and are having Dasha of those planets who are enemies of each other or who are not adjusting despite having friendship, then tiffs are possible between couples.

Example, If Boy is going through Rahu Dasha and Girl is going through Ketu Dasha. In this situation Boy’s behavior is influenced by Rahu, means instability issues, seeking pleasures all the time etc. and Girl’s behavior is influenced by Ketu, means salvation etc.

In this case, the possibility of not having a good married life is seen.

Boy is always expecting more with the girl and having influence towards pleasures while on the other hand Girl is not comfortable with pleasure and wants to get away from this relationship.