Latches CE ("RSI≥50 → predict UP") or PE ("RSI<50 → predict DOWN") the instant the 15:15 spot candle closes — the last reading before NIFTY's Closing Auction Session freeze (15:15–15:28). Deployed exit is mode="fixed", exit=15:29 (changed 2026-09-02 from the earlier 15:39 setting, per explicit user request — the 15:39 variant went 0/3 on real paper trades since deploy, net -Rs.18,665. 15:29 is the one exit variant of the two that actually clears the project's own z>2 significance bar on the original 18-day sample, z=+2.38, +6.50 pts/18d — underlying RSI hit-rate 66.7%, trade win-rate 38.9%. Still a thin, non-fold-robust n=18 sample; not a freshly validated result, a return to the better-evidenced of the two tested variants).