James Watson Cronin was an American physicist born on September 29, 1931, in Chicago, Illinois. He was awarded the Nobel Prize in Physics in 1980 for his discovery of the violation of the CP symmetry principle in certain particle interactions, conducted in 1964 alongside his colleague Val Fitch. This groundbreaking research demonstrated that certain particle decays do not occur symmetrically over time. Cronin served as a research professor at the University of Chicago and was the spokesperson for the Pierre Auger Observatory until his death.
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Age (Today)
Your next birthday is 345 days away.
Death Anniversary
Next death anniversary is 54 days away.
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Place of Birth
Time Zone - America/Chicago (6:0 W)
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Meaning of the name - James
supplanter, he who takes the place of another
Read Full James Name AnalysisSeptember 29, 1931 Facts
Generation Group
James Watson Cronin belongs to the Silent Generation group.
Place of Birth: Chicago
Place of Death: Saint Paul
Educated At: Highland Park High School | Southern Methodist University | University of Chicago
Occupation: nuclear physicist | university teacher | physicist
Employers: Collège de France | University of Utah | Princeton University | University of Chicago
Awards Received: Fellow of the American Physical Society | Honorary doctoral degree of the Pierre and Marie Curie University | John Price Wetherill Medal | honorary doctorate of the University of Santiago de Compostela | Foreign Member of the Royal Society | Ernest Orlando Lawrence Award | Guggenheim Fellowship | National Medal of Science | Nobel Prize in Physics
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 September 29, 1931
Note: Moon position is location and time sensitive.Planet | Position (Tropical, Western) | Transits on September 29, 2025 | Secondary Progressions for September 29, 2025 |
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Sun | 5 Libra 37 | 6 Libra 50 | 10 Capricorn 8 |
Moon | 7 Taurus 25 | 4 Capricorn 5 | 19 Libra 10 |
Mercury | 21 Virgo 19 | 19 Libra 11 | 20 Sagittarius 10 |
Venus | 11 Libra 25 | 12 Virgo 32 | 8 Aquarius 36 |
Mars | 8 Scorpio 24 | 5 Scorpio 1 | 17 Capricorn 20 |
Jupiter | 15 Leo 22 | 22 Cancer 19 | 21 Leo 31 |
Saturn | 16 Capricorn 58 | 27 Pisces 44 | 24 Capricorn 4 |
Uranus | 17 Aries 50 | 1 Gemini 15 | 15 Aries 26 |
Neptune | 6 Virgo 38 | 0 Aries 34 | 7 Virgo 51 |
Pluto | 22 Cancer 2 | 1 Aquarius 24 | 21 Cancer 17 |
Rahu | 5 Aries 13 | 17 Pisces 6 | 0 Aries 14 |
Ketu | 5 Libra 13 | 17 Virgo 6 | 0 Libra 14 |
Chandra Kundali (Equal House, North Indian Diamond Chart)
