Indonesian people today, especially the millennial generation are experiencing a crisis of identity or lack of character. They do not understand precisely who they are. Javanese society has a very unique local wisdom related to human character based on the time of birth. The main problem in this study is how human character is related to the time of birth. Besides that, what local wisdom contained in human character is related to the time of birth day contained in the realm of Classical Javanese Manuscripts. The purpose of this study is to describe the types of human characters related to the time of birth. In addition, it also reveals the values of local wisdom about human character that is associated with the time of birth contained in the realm of Classical Javanese Manuscripts. The primary data source in this study is the Classical Javanese Manuscripts, namely the Serat Primbon, the Serat Pakuwon, stored in various museums and libraries. Data collection technique was conducted through participatory observation, in-depth interviews (in-depth interviewing) with interview guidelines, document studies and literature. Analysis of qualitative data was conducted by reducing data, presenting data, drawing conclusions / verification. Humans have a strong basic character based on the day of their birth because of the cosmic influence or the pawukon. The local wisdom contained in it includes: mishaps and their anticipation, cues and symbolism, livelihoods and treatment, positive or negative potential, and the direction of time that is the direction of the wind that is predicted as the direction of the arrival a tragedy. Thus it is clear that Javanese people in the past were able to identify and formulate human character related to the time of their day of birth and try to anticipate negative things that can occur in human life.