Free Vimshottari dasha is a cycle of planetary positions calculated on the basis of the position of the moon in a particular lunar mansion. It is necessary to mention in this regard that there are 27 lunar mansions which are also referred to as nakshatras. The cycle of Vimshottari dasha is 120 year long. According to the vimshottari dasha system, each of the astrological planets is assigned a major period or mahadasha.The duration of the mahadasha may vary from planet to planet, ranging from six years to twenty years. Vimshottari dashas of each of seven planets and two nodes of the moon have different influences on human life. The mahadasha of Venus is thought to bring luck, fortune and riches to the native. The position of the planet in the natal chart of the native is also a very important factor.A Vimshottari dasha analysis for you explains the mahadashas of the Vedic astrological planets and their influences on your life. In that case you will come to know which phases in your life favour you most. You can also be cautious when the mahadasha of a planet or one of the lunar nodes do not favour you satisfactorily.