Archived: <a href="https://archive.ph/1msh1" rel="nofollow noreferrer">https://archive.ph/1msh1</a><p>"Here we present the identification of cosmic time dilation in a sample of 190 quasars monitored for over two decades in multiple wavebands by assessing various hypotheses through Bayesian analysis. This detection counters previous claims that observed quasar variability lacked the expected redshift-dependent time dilation."<p>The software for this project is available at <a href="https://github.com/eggplantbren/QuasarTimeDilation">https://github.com/eggplantbren/QuasarTimeDilation</a>.