Thomas Preston-Werner is an American billionaire, software developer, and entrepreneur, born on May 27, 1979. He is known for founding GitHub, a web-based hosting service for Git repositories, in 2008 alongside Chris Wanstrath and P. J. Hyett. An active contributor to the free and open-source software community, he emphasized the importance of code documentation for developers. He previously founded Gravatar in 2004, which was sold to Automattic in 2007, and later co-founded Chatterbug, a language learning software. Preston-Werner is recognized for his significant contributions to the tech community.
Zodiac Sign (Western)
Sunsign, Tropical Zodiac
Zodiac Sign (Vedic)
Moonsign, Sidereal Zodiac
Age (Today)
Your next birthday is 305 days away.
Place of Birth
Time Zone - America/Chicago (5:0 W)
Chinese Zodiac Sign
Birth Number
Life Path Number
Name Number (Chaldean)
Name Number (Pythagorean)
Meaning of the name - Tom
twin
Read Full Tom Name AnalysisMay 27, 1979 Facts
Generation Group
Tom Preston-Werner belongs to the Generation X group.
Place of Birth: Dubuque
Educated At: Harvey Mudd College | Dubuque Senior High School
Occupation: programmer | business executive | software engineer | software developer | computer scientist | businessperson
Employers: Gravatar | GitHub Inc. | Powerset
Astrology Analysis
Note: This birth chart is calculated using the date and place of birth, with the time set to noon (12:00 PM) local time. While this provides accurate planetary positions for most celestial bodies, the Ascendant (Rising Sign) and house cusps are not calculated since they require precise birth time. For a complete astrological analysis including houses and rising sign, please provide the exact birth time.Ephemeris for May 27, 1979
Note: Moon position is location and time sensitive.| Planet | Position (Tropical, Western) | Transits on May 27, 2026 | Secondary Progressions for May 27, 2026 |
|---|---|---|---|
| Sun | 5 Gemini 49 | 6 Gemini 25 | 20 Cancer 42 |
| Moon | 26 Gemini 18 | 25 Libra 55 | 14 Pisces 19 |
| Mercury | 3 Gemini 1 | 21 Gemini 22 | 13 Leo 44 |
| Venus | 11 Taurus 44 | 10 Cancer 19 | 8 Cancer 58 |
| Mars | 8 Taurus 36 | 6 Taurus 34 | 12 Gemini 25 |
| Jupiter | 4 Leo 26 | 23 Cancer 17 | 13 Leo 19 |
| Saturn | 7 Virgo 45 | 11 Aries 45 | 10 Virgo 49 |
| Uranus | 18 Scorpio 20 | 1 Gemini 50 | 17 Scorpio 3 |
| Neptune | 19 Sagittarius 30 | 3 Aries 58 | 18 Sagittarius 17 |
| Pluto | 16 Libra 40 | 5 Aquarius 24 | 16 Libra 30 |
| Rahu | 13 Virgo 27 | 4 Pisces 23 | 10 Virgo 58 |
| Ketu | 13 Pisces 27 | 4 Virgo 23 | 10 Pisces 58 |
Chandra Kundali (Equal House, North Indian Diamond Chart)
Astrology Transits Analysis for Year 2026
Tom Preston-Werner's 2026 Transits to Natal Planets
- Mars aspects Rahu
Exact: 10 February, 2026 - Mars opposition Saturn
Exact: 12 March, 2026 - Saturn sextile Mercury
Exact: 12 March, 2026 - Ketu conjunction Saturn
Exact: 12 March, 2026 - Saturn sextile Sun
Exact: 01 April, 2026 - Mars conjunction Mars
Exact: 31 May, 2026 - Mars square Saturn
Exact: 10 July, 2026 - Jupiter conjunction Jupiter
Exact: 20 July, 2026 - Mars conjunction Saturn
Exact: 17 December, 2026
