<Sarcasm::On> Pull up yahoo finance. If no charts appear (dow, s&p, naz), its a down day. If these charts appear, its and up day. Yahoo dose not want to "scare" you by visually showing the charts. But on "up" days, they're proud to show it. Go figure? <Sarcasm:: Off> Hard to backtest this; its been more of an observation really. Disclosure; Your mileage may vary.