Owing to this reason, the birth chart that one builds using the principles of Indian astrology is completely different from the one that western astrologers make based on their understanding.
The most important aspect of Indian astrology is the fact that it takes into account the place, time and date of birth of a person while building his or her birth chart.
Even little error in these three details leads to an extremely big error while creating the chart. Not only western astrology, the Indian astrology is also very different from Chinese horoscope.