"Exceptional Friday" (the second rule: Friday following continuous four days close in red) Effect (50 to 100 points upmove from the low) was complied and Nifty closed in green after an upmove of 80 points. Today(23rd Dec 2016) Nifty opened at 7972.50, moved down to 7942.05, moved up to 8022.60 and closed at 7985.75, with a gain of 6.65 points. The first rule of "Exceptional Friday" is "first Friday after the F&O expiry".
By the way, it may be interesting to readers how Nandi had realised the above rules. On Friday morning Nandi used to go to Pazhavangadi Ganapathi temple in Trivandrum and pray to the powerful deity there. It was observed that usually Nandi had lost money on Fridays. As there is no possibility that lord Vigneshwara is punishing Nandi for trading in stock market, an analysis was done. Then it was found that Nandi always bought first and sold it later. Hence came the realisation of Friday general rule and later the exceptions. First post on Exceptional Friday was made on Thursday, November 20, 2008.