Personal Seminar students will recall my method that takes just one planet and gets the 1929 high, the 1932 low and the 1937 high all to the day with one simple algorithm, however, this Square of Nine technique of Gann's can work almost as well at a times with the right planets (and Pairs) - Michael S. Jenkins, Stock Trading Using Planetary Time Cycles - The Gann Method Volume II p.35.