← Encyclopedia of Astrology · lesson 39/235
Social planets
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What they are
The social planets are Jupiter and Saturn. They sit between the fast personal planets and the very slow outer planets, and the name reflects that middle position: modern astrology reads them as the planets through which a person meets the wider world — society, its rules and opportunities, belief and duty, reward and responsibility. Some writers call them the "bridge" planets for the same reason.
The term is modern, part of the twentieth-century sorting by speed. Before 1781, Saturn was simply the outermost planet anyone knew, the edge of the visible system.
How slowly they move
- Jupiter takes just under twelve years (about 11.9) to go round the zodiac, so it spends about a year in each sign.
- Saturn takes about twenty-nine and a half years, spending roughly two and a half years in a sign.
That is slow enough that everyone in a school year shares a Jupiter sign, and people born within two or three years of one another share a Saturn sign — but quick enough that the sign still separates one cohort from the next. Their placement by house and aspect is what makes them personal in a given chart.
Their cycles also measure a life. Jupiter returns to its birth place around ages 12, 24, 36, 48 and so on; Saturn around 29–30, 58–60 and 87–89, the famous Saturn return. Their meetings with each other — the Jupiter–Saturn great conjunction, about every twenty years — were among the most watched events in mundane astrology.
How they are read
- Jupiter — growth, opportunity, generosity, faith and meaning; where a person reaches for more and tends to be given room.
- Saturn — structure, time, limits, discipline and maturity; where a person is tested, slowed, and builds something that lasts.
Read together, they are often described as a pair of opposite pulls: expansion and contraction, hope and realism, the open door and the solid wall. In transit they mark the medium-length chapters of life — a year of Jupiter, two or three of Saturn — rather than the passing days of the personal planets or the decades-long themes of the outer ones.
In the tradition
Traditional astrology graded these two very differently. Ptolemy describes Jupiter as temperate, warming and moistening, and so beneficent; Saturn as chiefly cooling and drying, and so harmful in excess. Lilly calls Jupiter the greater fortune and Saturn the greater infortune. In other words, Jupiter is the greater benefic and Saturn the greater malefic — though sect softens Saturn in a day chart, and both still incline rather than decide.
With Mars they also make up the old superior planets, those beyond the Sun in the classical order, which can stand in opposition to the Sun and turn retrograde when they do.