The Horoscope or Birth-chart (popularly known as Janam Kundali) is a map of the heavenly bodies, which shows the positions of the planets and their relation at birth of a newborn taking into account, the time and place of birth. A birth chart is a must for any Vedic astrologer to make predictions.
The Horoscope shows the sign of Zodiac and the relative position of planets and nakshatras positioned in the twelve houses of the map. The "houses" of the chart indicate specific areas of our life in which actions will be performed, which will be strong or weak depending on the nature and situation of planets that influence them.