NO TIME BARS UNIVERSE

No Time Bars Universe (NTBU) is a hypothesis and methodological framework for testing whether precision physical clocks exhibit reproducible, observable residuals that cannot be fully accounted for by established relativistic, geodetic, atomic, transfer-link, and instrumental models. General relativity is treated as the quantitative null model. NTBU introduces an explicit Observability Requirement: any proposed deviation from relativistic proper-time behavior must alter a measurable dimensionless quantity or differential observable, such as a frequency ratio between different atomic-clock species, a differential gravitational-redshift response, or a correlated signal across a precision-clock network. Species-universal and environment-independent rescalings that are observationally equivalent to a reparameterization of time are excluded. The paper develops the Proper-Time Residual Test (PTRT), a preregistered falsification protocol in which conventional relativistic and metrological effects are modeled before any NTBU parameter is introduced. Candidate deviation channels include local-position-invariance tests, curvature-sensitive clock responses, variation of dimensionless fundamental constants, and scalar-field-like signals. Existing precision-clock measurements provide stringent boundary conditions on these possibilities. The framework also proposes a prospective test using the Atomic Clock Ensemble in Space (ACES): candidate parameters derived from independent data must be frozen before comparison with relevant ACES results, preventing post-hoc adjustment of the hypothesis. NTBU does not claim that general relativity has been experimentally violated, that proper time has been demonstrated to be incomplete, or that an anomalous clock residual has been detected. Its purpose is to formulate a constrained and falsifiable research program in which the strong NTBU hypothesis can be rejected by null results or subjected to further investigation only if a predeclared model successfully predicts independent observations.