As an active participant in the Transiting Exoplanet Monitoring Project, I have contributed significantly to the analysis of over 300 light curves, specifically using the Transit Timing Variation (TTV) method. This in-depth study focused on the search for potential variations within 40 hot Jupiter systems. Unfortunately, despite thorough investigation, no substantial TTV signals have been identified within these systems. This research, however, has proven invaluable in expanding our understanding of these planetary systems and will undoubtedly aid in future exploration and discovery endeavors.