The difference between true north and magnetic north is the angle of declination, which varies according to the location of a compass on the earth. The angle of declination from Mt. Diablo at the time the Zodiac sent his map was estimated between 16.5 and 17 degrees east of true North.

If you place this over a compass rose, the center of the circle falls close to 246 degrees, which happens to be 4 radians and magnetic north (the Zodiac Killer's crude design was off by about 3 degrees). Remember, Zodiac stated on the Mt. Diablo map "is to be set to Mag. N." Magnetic north was 17 degrees in 1970. A radian is 57.3 degrees.

2017年2月3日 · This compass rose and SFPD crosshair, angled at 246 degrees can now be placed over the Phillips 66 map. But first we will examine the second crosshair placed at the foot of the Little List letter. The Zodiac Killer placed 'Diablo', the Spanish word for devil over the 180 degree axis. This may not have any significance, but if we couple the 66 ...

By drawing a compass-rose inspired Zodiac symbol on the Phillips 66 map that accompanied his June 26, 1970 letter, the Zodiac killer created a clear and compelling connection between his persona and the subject of nautical navigation.

A solution to the famous Zodiac Z32 cipher and the Phillips 66 map puzzle associated with it is presented herein. The solution possesses the following features: It utilizes information from all three available sources (the June 26, 1970 letter from the Zodiac to the San Francisco Chronicle, the Phillips 66 road map that

The Zodiac Killer is the pseudonym of an unidentified serial killer who murdered five known victims in the San Francisco Bay Area between December 1968 and October 1969. The case has been described as "arguably the most famous unsolved murder case in American history," and has become both a fixture of popular culture and a focus for efforts by ...

The Zodiac's "Mt. Diablo Map" was actually a road map produced by the Phillips 66 company and was available for sale in many service stations across the United States. The front side of the map featured a large section of the Los Angeles area and the otehr side depicted maps of both Northern California and Southern California, including ...

2014年1月31日 · The Zodiac Killer wrote on the Map of the Bomb Location to set compass to Magnetic North and not True North. You have to allow eighteen degrees for declination of the angle. Magnetic north is the Magnetic Field of the Earth’s Pole.

On the map, the Zodiac had drawn a crossed-circle over Mt. Diablo, taking time to leave the center of the cross incomplete so that peak of the mountain was still visible. The cross was placed over the mountain in such a manner that the four points approximated the four points of a compass, and, at each of these positions, the Zodiac had written ...

2023年3月12日 · I created an online map that can be used to investigate potential Z32 solutions. The map includes a georeferenced version of the Z32 map, 'ring buffers' for every inch, 1/2 inch, and 1/4 inch from Mount Diablo, and radians counterclockwise from magnetic north at the time (~17 degrees east of N).