Aquarius

Aquarius is the eleventh of the twelve signs: a fixed air sign and one of the two houses of Saturn. This year the Sun is in Aquarius from 20 January to 18 February 2026. Ptolemy and Lilly agree on its ruler, and Ptolemy names the two signs it belongs with. Set side by side, they seem to differ on whether it is cold or warm, and that is worth a closer look.

Saturn’s house, opposite the Sun’s

Ptolemy begins with the Sun and Moon. He gives Leo to the Sun and Cancer to the Moon, and then places Saturn as far from them as the circle allows. Saturn, he writes, “is cold and inimical to heat” and so takes the signs “opposite to Cancer and Leo”, which are Aquarius and Capricorn. Aquarius is the one that faces Leo.

He says these two signs are assigned to Saturn “in consideration of their cold and wintry nature”. That is a northern view: the Sun passes through Aquarius during winter in the northern hemisphere.

Our data lists Saturn as the traditional ruler of Aquarius and Uranus as the modern one. The passages quoted on this page speak only of Saturn.

A fixed sign, with no exaltation

Ptolemy calls a sign fixed when it follows a sign in which a season begins, because the weather of that season “is then more firmly established”. He does not list the fixed signs by name. Applying the rule to Aquarius is our reading: it follows Capricorn, where he says the Sun’s turn causes winter, and our data gives its modality as fixed. He is careful to add that the season has not “actually increased in vigour”; it has lasted longer, and on his account things are more strongly affected by it for that reason.

His chapter on exaltations gives each of the seven planets a sign of exaltation and a sign of fall. Aquarius is not among them.

The Aquarius character, as the old books give it

William Lilly’s line calls Aquarius “diurnal, sanguine, fixed, rational, humane, masculine”. He is listing qualities for judging a chart, not describing people, and “humane” in his vocabulary names the human signs. Of Saturn he says Aquarius is the “house wherein he most rejoyceth”.

Lilly also calls the sign “hot and moyst”, which sits oddly beside Ptolemy’s “cold and wintry”. The comparison is ours, and so is the explanation: Ptolemy’s phrase belongs to Saturn and the season, while Lilly gives the same warm, moist, sanguine temperament to Gemini and Libra, the other two signs of this triplicity.

Alan Leo, writing in the nineteenth century, describes people. He writes: “Aquarian individuals are determined, patient, quiet, unobtrusive and faithful.” He adds that “they inspire trust by their equable dispositions”. He names one gift above the others: “The main feature of this sign is the remarkable ability that it gives for the study of human nature; the Aquarian individuals are born character-readers, and they are rarely mistaken in their judgment.”

On love he joins the sign’s modality to its element. He finds in Aquarians “the intense and fixed love nature of the fixed signs combined with the refined mental quality of the airy signs”, and adds: “They are faithful in their love until the end, the love generally living in the higher mind.”

An air sign among three

Ptolemy’s third triplicity “is composed of Gemini, Libra, and Aquarius, masculine signs”. He attributes it to Saturn and Mercury, and writes that “Saturn rules it by day”. On our reading, that gives Saturn a second claim on Aquarius, through the triplicity as well as the house.

In our data these three are the air signs, and they head the list of matches below. Libra comes first, Gemini second, and Aquarius with itself third. Leo, the opposite sign, stands sixth of the twelve, and Virgo is last. The method behind the order is on how we score.