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
Sign-on and sign-off sign off; however, they may simply cut to a black screen with no sound (as other digital subchannel networks on the same channel space may broadcast 24/7, requiring the station to remain powered up; consideration after 2017 in the United States is now also given to channel sharing partners who may do the same). Occasionally, the signal is cut off entirely, causing digital broadcast receivers (cable/satellite boxes, digital TVs/converter boxes) to display error messages. Both sign-offs and sign-ons have become less common with the increasing prevalence of twenty-four hours a day, seven days a week broadcasting. They are, however, still