This formula was introduced in 1989 by a UK bond trader named Nick Stott. The Camarilla Equation in calculates ten levels of intra-day support and resistance according to yesterday’s High, Low, Open and Close. There are 5 of these “S” levels below yesterday’s close and 5 “R” levels above. They has numbers S1, S2, S3, S4, and S5, etc. The most important levels are S3, R3 levels and S4, R4 levels. Camarilla Calculator is a technical tool that calculates these levels automatically from the last trading session's open, high, low and close value. Just input these levels in the calculator and it will calculate the trading levels automatically.