Roberto Renout, astromancer, conceived the Hand-Glove correction method in Astrology.
In programming his astrological software, he realised that often a correction was needed for assumed time of birth and presumed actual time of birth, as calculated by the times and date of life events.
 

Roberto Renout computed this correction factor in what he called the hand-glove method: relating objective calculation and subjective experience.
For that purpose the included a table in his astrological program, called HyperMandala, which asked people specific questions about remarkable life events.
in the computation he only made use of the extreme responses which they gave in filling out the questionnaire.
As a result he was able to pick out very precise factors of astrological conjunction's or planetary positions in the astrological chart and give them more value in the calculation of the precise moment of birth.