Personalised Cosmic Trio poster — Sun, Moon and Rising sign

Their Cosmic Trio as a poster: Sun, Moon and Rising sign, worked out from their date, time and place of birth, each with the constellation of its sign and a line in a tender, teasing or no-filter tone. It suits a birthday, Christmas, Galentine’s Day on 13 February or a housewarming in a shared flat. Without the time of birth, the poster can still be made, with the Sun and the Moon.

Our free calculator gives the Sun sign, the Moon sign, the Rising sign and the descendant. The Sun comes from the date alone, except on the day it changes sign. The Moon can be read from the date alone a little more than half the time; on the days it changes sign, the calculator warns you and the time decides. The Rising sign needs the time and place of birth. It runs in your browser: the date and time never reach our server, which only looks up the place name.

Their first name, date of birth (plus time and place, if you add them), then their three signs: Sun, Moon and Rising. Under each, the constellation the sign is named after and a line — soppy, teasing, no filter, or your own. At the bottom: the moon on the day they were born, their dominant element, the day of the week and your dedication.

Yes. The Sun and Moon are worked out from the date and time of birth, the rising sign from the time and place, using Jean Meeus’s astronomical formulas and the tropical zodiac, the one astrology apps use. We checked the maths against published birth charts, rising signs included.

The poster still works: the Sun and Moon only need the date. If either changes sign that day, the editor tells you at what time, so you can check on the quiet. Without a time the rising sign can’t be worked out: pick it if you know it, otherwise the poster shows two signs instead of three.

Yes. Any suggested line can be swapped for your own, up to 64 characters — that’s where the in-joke nobody else gets goes. Changing the tone never touches a line you’ve written yourself.

Yes. The lines talk straight to the person and never assume a gender: they work just as well for a best mate, a brother or a boyfriend.

No, and it isn’t meant to be: it’s the constellation the sign is named after, drawn from the International Astronomical Union’s figures, each star at its real brightness. Over two thousand years, precession has pulled the signs and constellations apart. For the real sky on a given night, there’s our star map poster.

A4, 30 × 40, 40 × 60, 50 × 70 and 70 × 100 cm: standard frame sizes, easy to find (IKEA, HEMA, Action). Optional wooden frame on the A4 and 30 × 40, in black, white or natural, with acrylic glass; the larger sizes ship rolled, to frame at home.

250 g/m² satin matte paper, lightfast pigment inks. Printed to order in our workshop in Aveyron, whatever the size. Shipped rolled, in a sturdy long cardboard box; the A4 travels flat, in a stiff card envelope, and a framed poster in a cardboard box.