Based on our large, homogeneous photometric database of Galactic Globular Clusters, a set of distance and reddening independent, relative age indicators has been measured. The observed δ(V-I) _(@2. 5) and △ V_(HB)~(TO) vs. metallicity relations have been compared to the relations predicted by two updated libraries of isochrones. Using these models and two independent methods, we have found that self-consistent relative ages can be estimated for our GGC sample.
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