Thousands of years ago, Astrology has taken its roots in Western Countries. Egyptians know Astrology 4000 We know that all planets rotate around the Sun. But in Astrology, we are concerned with the life of a person on earth and hence we draw the planets positions with respect to earth. This is the reason, the horoscope of the person is prepared taking earth as the central point and assuming all other planets including Sun are rotating around the earth.
The planets energies will not be same at two different locations on earth, because same configuration of the planets cannot be obtained.
Judging the changes in the horoscope of a person with a change in the location is called 'Locational Astrology'. Since the horoscope changes with location, when a person shifts from his birth place to another city or country, he is bound to experience the new modified effects of planets. Locational Astrology was practiced by Western Astrologers from 1930 to 1960 with the name 'Astrogeography'. During 1970s, Jim Lewis expanded this field using detailed maps and modern software which he called 'Astrocartography'.
Locational Astrology helps to know whether the new place to where you are getting transferred would be lucky for you or not. It also helps to know which type of good or bad results can be expected from the planets in the new location. The difficult part in Locational Astrology is when someone wants to know which city or cities are good for him. In this case, we ought to prepare horoscopes for each and every city on the earth which is impossible. But if a person wants to know whether the city A or city B is good for him, then it becomes easy for the Astrologer to give guidance as he should prepare horoscopes for only those two cities.
While judging the effects of planets in Locational Astrology, importance is given to 4 angular houses. They are Ascendant (As), Descendant (Ds), the 4th house which is called Immum Coeli (IC) and the 10th house which is called Medium Coeli (MC). Since these houses are called 'action houses', when a planet is located in any of these houses, it is bound to play an important role in the person's life. When good planets like Jupiter and Venus are positioned in these angular houses, the person will get very good success and prosperity. When bad planets like Mars, Saturn, Uranus, Neptune and Pluto are positioned in the angular houses, the person will face troubles and failures.