Fine-grained astrological systems place unusual importance on the Ascendant degree. Because the Ascendant moves continuously through the zodiac, a small change in recorded birth time can alter the degree and, in some methods, the corresponding Nadi Amsa.
That does not mean a birth certificate time should be changed simply to obtain a preferred interpretation. A responsible approach is to begin with the best documented time available, note its reliability, and only then investigate rectification techniques if the tradition being studied calls for them.
For research, keep the process transparent. Record the original time, the source of the time, the adjustment being tested, and the reason for testing it. Then compare the resulting chart patterns with several well-documented life events.
The broader lesson is methodological: precision in the input does not automatically create certainty in the output. Nadi Astrology remains a traditional interpretive practice rather than a scientifically validated predictive method. Its value for a reader may lie in symbolic reflection, structured self-inquiry, and the study of an old astrological tradition.