Donald Knuth’s birth chart
Computer scientistBorn January 10, 1938, Milwaukee, Wisconsin, United States
Patient and determined.
- SunCapricornThe Architect
- MoonTaurusor Aries
- VenusCapricornThe Loyal Partner
What his chart says about him
Who he is
Sun in Capricorn, the Architect
Patient and determined. Plays the long game, earns respect slowly, and grows warmer and more playful with the years. Imagination and identity work together: he can become a character, a mood or an idea, and make others believe in it.
The Sun trine Neptune (close at 1.2°)
What he needs
Moon in Taurus or Aries, the Hearth
Calm, warm and steady. Feels safest with good food, soft things and a familiar routine, and makes everyone around him feel the same. His feelings run large: he wants more comfort, more company and more of everything than any one day gives.
The Moon square Jupiter (almost exact at 0.3°) · For a birth before 4:06 a.m., his Moon was in Aries.
How he loves
Venus in Capricorn, the Loyal Partner
Loves seriously and steadily. Shows love through commitment and reliability. Charm and desire work together: he knows what he wants in love and how to win it.
Venus sextile Mars (close at 1.1°)
How he thinks
Mercury in Sagittarius, the Philosopher
Frank, curious and full of opinions. Thinks in big pictures and loves a debate about what really matters. What he knows and what he says need careful managing, and secrets sit uneasily with him.
Mercury quincunx Pluto (almost exact at 0.2°)
What drives him
Mars in Pisces, the Gentle Warrior
Works from instinct and compassion. Fights for others more easily than for himself. His purpose and his drive work together: once he decides on something, he moves on it fast.
The Sun sextile Mars (wide at 4.7°)
The shape of his chart
Pluto is the hub of his chart: it takes part in five of its aspects, more than any other body, so his intensity touches everything else in it. Most of his planets are in earth signs: the practical and the solid.
The sky the day he was born
The Moon
Donald Knuth was born five days before a full Moon. At noon that day the Moon was 63% lit. Tonight’s Moon
The day
It was a Monday, nineteen days after the December solstice.
Saturn return
For Donald Knuth, Saturn came back to where it stood at his birth in 2025 and 2026, at 87: his third Saturn return, after the second in 1996. When is yours?
Is yours here?
Signs that click with Capricorn
You and Donald Knuth
Would you be friends? Is there a spark? See where your chart meets his, and the signs you share.
Or someone you know: a partner, a friend or a parent. Compare two charts
The chart
Point at a body or a sign to see its connections.
The chart is cast for noon on the day, and everything shown here held all day long.
Every planet, point, pattern and aspect
More with the Sun in Capricorn
See allQuestions about his chart
What is Donald Knuth’s zodiac sign?
Capricorn. Donald Knuth was born on January 10, 1938, with the Sun in Capricorn, the Architect. Patient and determined. Plays the long game, earns respect slowly, and grows warmer and more playful with the years.
What is Donald Knuth’s Moon sign?
Taurus or Aries. The Moon moved from Aries into Taurus at 4:06 a.m. that day, local time: in Aries for a birth before then, in Taurus for one after.
What is Donald Knuth’s rising sign?
The rising sign needs the birth time to the minute, so this page leaves it out: everything on it held all day on January 10, 1938. Your own chart, cast from your birth time, gives yours.
What is Donald Knuth’s Venus sign?
Capricorn, the Loyal Partner. Loves seriously and steadily. Shows love through commitment and reliability.
How does your chart compare with Donald Knuth’s?
Set your chart beside Donald Knuth’s and see how the two meet, area by area: as friends, in love, in how you talk, working together and under one roof. It is free.
Sources and credits
Date and place of birth: Wikidata, and Donald Knuth’s Wikipedia article. The chart is cast for noon on the day.
Photo: Alex Handy, CC BY-SA 2.0, via Wikimedia Commons (the licence). The file and its full credit.
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The planets placed from DE440, the ephemeris NASA’s Jet Propulsion Laboratory publishes.
A correction, or a request to take this page down: hello@underyourstars.com.
To cite this page: Donald Knuth’s birth chart, Under Your Stars, https://underyourstars.com/people/donald-knuth