Birth details include the date of birth, place of birth and the time of birth. However, even though the native or her relative seldom misinforms the date of birth and the place of birth to the astrologer, the accuracy of the reported birth time has long been a major area of concern for the scientific minded astrologers. This is because, as students of astrology, we are amply aware that wrong birth time would invariably lead to a wrong degree rising on the East as the Lagna (Ascendant) with wrong planetary degrees at birth. The problem is augmented more so due to the wrong longitude of Moon at birth (emanating from a wrong birth time) resulting in a wrong balance of Dasha at birth and the subsequent periods. Since all the prediction is based on the cascades of Vimsottari Dasha periods of the nine planets, wrong time of birth will lead to prognostications of dubious quality for no fault of the astrologer or the science of astrology. Therefore, what we require is an effective technique of birth time rectification, which would be robust in its application and yield consistent results. However, a mere rectification through a robust logic is not enough.