Most "real" paint base flash is 30 minutes tops. PPG, Omni, Dupont, Nason, Sikkins, Glasurit, BASF , even most Sherwin-williams. Off the wall paints, Kirker, SPS, Urechem etc say long flash times because they're basically modified Single stage, not really a true base. I don't like long flash time paints because it's a long time for it to load up with trash.