Astrology is a
science of predicting events in the life of an individual. Those events would
not knock the door of the native randomly, but at specific age. This time
specific prediction is based on Dasha system.
According to Vedic
astrology, effect of nine planets on the native is taken into consideration.
But all these planets are not active at the same time. They show their
influence with time. So the period, during which any particular planet is most effective,
is termed as Dasha of particular period. The auspicious planets in the
horoscope or auspicious combinations either due to their placement or aspect
become fruitful during Dashas of particular planet.