Astrological sign operate on cycles of years, lunar months, and two-hour periods of the day (also known as "shichen"). A particular feature of the Chinese zodiac is its operation in a 60-year cycle in combination with the Five Phases of Chinese astrology (Wood, Fire, Metal, Water and Earth). Nevertheless, some researches say that there is an obvious relationship between the Chinese 12-year cycle and zodiac constellations: each year of the cycle corresponds to a certain disposal of Jupiter. For example, in the year of Snake Jupiter is in the Sign of Gemini, in the year of Horse Jupiter is in the Sign
Zodiac Killer Napa County and in the city of Riverside. In May 2018, the Vallejo Police Department announced their intention to attempt to collect the Zodiac Killer's DNA from the back of stamps he used during his correspondence. The analysis, by a private laboratory, is expected to utilise an advanced new technique that is able to separate DNA from the glue present on the back of stamps. It is hoped the Zodiac Killer may be caught in a similar fashion to the Golden State Killer. Robert Graysmith's book "Zodiac" advanced Arthur Leigh Allen as a potential suspect based on circumstantial evidence. Allen