James Julius Spilker Jr. (August 4, 1933 – September 24, 2019) was an American telecommunications engineer known for his crucial contributions to the development of GPS technology. A Stanford University alumnus, he worked on satellite positioning signal technology initially at Lockheed Research Labs and helped develop robust communication systems during the Berlin Blockade. He was pivotal in the formation of GPS architecture and CDMA standards. Spilker was also involved in advancing GPS signals and founded multiple firms, earning numerous accolades for his engineering skills, including the prestigious Queen Elizabeth Prize for Engineering in 2019.
Zodiac Sign (Western)
Sunsign, Tropical Zodiac
Zodiac Sign (Vedic)
Moonsign, Sidereal Zodiac
Age (Today)
Your next birthday is 343 days away.
Death Anniversary
Next death anniversary is 29 days away.
Death Date
Place of Birth
Time Zone -
Chinese Zodiac Sign
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Meaning of the name - James
supplanter, he who takes the place of another
Read Full James Name AnalysisAugust 4, 1933 Facts
Generation Group
James Spilker belongs to the Silent Generation group.
Educated At: Stanford University School of Engineering
Occupation: engineer
Spouses: Anna Marie Spilker
Employers: Stanford University
Awards Received: Edison Medal
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 August 4, 1933
Note: Moon position is location and time sensitive.| Planet | Position (Tropical, Western) | Transits on August 4, 2025 | Secondary Progressions for August 4, 2025 |
|---|---|---|---|
| Sun | 11 Leo 50 | 12 Leo 34 | 11 Scorpio 50 |
| Moon | 26 Capricorn 40 | 17 Sagittarius 34 | 8 Gemini 34 |
| Mercury | 3 Leo 25 | 6 Leo 26 | 3 Sagittarius 52 |
| Venus | 9 Virgo 43 | 5 Cancer 16 | 27 Sagittarius 50 |
| Mars | 16 Libra 31 | 28 Virgo 36 | 19 Sagittarius 4 |
| Jupiter | 22 Virgo 24 | 12 Cancer 30 | 11 Libra 34 |
| Saturn | 13 Aquarius 19 | 1 Aries 23 | 10 Aquarius 17 |
| Uranus | 27 Aries 24 | 1 Gemini 2 | 24 Aries 44 |
| Neptune | 8 Virgo 52 | 1 Aries 55 | 11 Virgo 55 |
| Pluto | 23 Cancer 31 | 2 Aquarius 20 | 24 Cancer 44 |
| Rahu | 29 Aquarius 28 | 20 Pisces 4 | 24 Aquarius 36 |
| Ketu | 29 Leo 28 | 20 Virgo 4 | 24 Leo 36 |
Chandra Kundali (Equal House, North Indian Diamond Chart)
