The Tolaki people continue to base their way of life on traditions like the Tolaki calendar for identifying good and bad days. The Tolaki tribe employs a tool that is often employed as a weather forecast or as a guide for the community to carry out certain actions to ascertain this. The formulation of the issue is brought up by the author, who asks questions like: How does the Tolaki calendar system work?, How are the good and bad days for the Tolaki people determined?, and How is astronomical research related to the Tolaki calendar system?. The Tolaki Culture Book, which is processed with journals linked to the Tolaki Tribal Calendar System, is used in this research technique, which is a library method. It is studied descriptively and pres...