No idea, but the instruction sheet that came with the box of 1965 Royal Pan I recently got says, 6 min at 68F for tray development (cont. agitation) and 8 min for tank development (agitate at 1 min intervals) for Polydol, and those are 2 minutes less than their recommendations for D-76 stock, so you might be able to use that info to figure out some starting times, at least with traditional films.