How important is it to have an exact birth time?
Its always good to input the most accurate birth time possible, even though many people can only determine the time based on a guesstimate from their parents. The time affects the determination of the house divisions since the planets on a birth date are fixed while only the houses are shifted. If the guessed time and the real time fall within the same houses, then the interpretations will be the same. But, if they fall within different houses, then the interpretations could be significantly different. There are some astrologers who perform calibration of birth time for subjects. The method they use is to perform Transit analysis by casting a Daily Horoscope based on a given birth time and then determining if some major event correctly coincides with the interpretation results. If the events predicted in the chart did not occur, the astrologer will change the time and repeat the exercise again until the events and the readings coincide, and a birth time is calibrated. Although this can