In Jyotisha, the positions of the planets and other significant
points are calculated with respect to a person's, or event's, birth
data. Based on this information your Vedic astrologer calculates
about 100 charts and tables. It is the job of the Vedic astrologer
to study them simultaneously and derive useful information based on
the rules of interpretation created by ancient sages.Both systems
use the same twelve houses and interpret them similarly (though with
variations). The Vedic system makes the cusp the same beginning of
the house, while Western astrology makes the cusp the middle of the
house. This causes half the planetary positions in the Vedic chart
to move forward to the next house relative to the Western chart.