Johan Cornelis Hendrik Gerretsen (1907-1983) was a Dutch mathematician known for his contributions to mathematics and education. He studied at the University of Groningen, earning his degree in 1930, and became a teacher until 1945. Gerretsen completed his doctorate in 1939 and later served as a professor from 1946 until his retirement in 1977. He was also instrumental in introducing computers at the University of Groningen, enhancing the application of mathematics in various fields.
Zodiac Sign (Western)
Sunsign, Tropical Zodiac
Zodiac Sign (Vedic)
Moonsign, Sidereal Zodiac
Age (Today)
Your next birthday is 348 days away.
Death Anniversary
Next death anniversary is 127 days away.
Death Date
Place of Birth
Time Zone - Europe/Amsterdam (0:19 E)
Chinese Zodiac Sign
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Name Number (Chaldean)
Name Number (Pythagorean)
Meaning of the name - Johan
God is gracious
Read Full Johan Name AnalysisMay 20, 1907 Facts
Generation Group
Johan Gerretsen belongs to the GI Generation group.
Place of Birth: Winschoten
Place of Death: Smalle Ee bij Drachten
Educated At: University of Groningen
Occupation: university teacher
Employers: University of Groningen
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 20, 1907
Note: Moon position is location and time sensitive.| Planet | Position (Tropical, Western) | Transits on May 20, 2026 | Secondary Progressions for May 20, 2026 |
|---|---|---|---|
| Sun | 28 Taurus 18 | 29 Taurus 29 | 22 Virgo 27 |
| Moon | 27 Leo 17 | 20 Cancer 55 | 9 Capricorn 59 |
| Mercury | 23 Taurus 35 | 6 Gemini 37 | 0 Libra 21 |
| Venus | 27 Aries 25 | 1 Cancer 43 | 22 Virgo 50 |
| Mars | 17 Capricorn 25 | 1 Taurus 9 | 16 Capricorn 3 |
| Jupiter | 10 Cancer 14 | 22 Cancer 0 | 5 Leo 29 |
| Saturn | 25 Pisces 51 | 11 Aries 5 | 24 Pisces 41 |
| Uranus | 12 Capricorn 15 | 1 Gemini 24 | 8 Capricorn 42 |
| Neptune | 10 Cancer 47 | 3 Aries 48 | 14 Cancer 36 |
| Pluto | 22 Gemini 40 | 5 Aquarius 27 | 24 Gemini 48 |
| Rahu | 26 Cancer 25 | 4 Pisces 46 | 20 Cancer 7 |
| Ketu | 26 Capricorn 25 | 4 Virgo 46 | 20 Capricorn 7 |
Chandra Kundali (Equal House, North Indian Diamond Chart)
