René Rodolphe Joseph Rohr (October 20, 1905 – December 13, 2000) was a notable historian of science, specializing in gnomonics, the study of sundials. He made several contributions to the history and construction of sundials. Rohr served as vice president of the British Sundial Society, SAFGA, and DGC. He is recognized in scholarly publications as René R. J. Rohr or R. R. J. Rohr. Notable works include 'Les Cadrans solaires. Traité de gnomonique théorique et appliquée' (1965), later expanded in 1986 as 'Cadrans solaires: histoire, théorie, pratique'.
Zodiac Sign (Western)
Sunsign, Tropical Zodiac
Zodiac Sign (Vedic)
Moonsign, Sidereal Zodiac
Age (Today)
Your next birthday is 349 days away.
Death Anniversary
Next death anniversary is 38 days away.
Death Date
Place of Birth
Time Zone - Europe/Paris (0:9 E)
Chinese Zodiac Sign
Birth Number
Life Path Number
Name Number (Chaldean)
Name Number (Pythagorean)
October 20, 1905 Facts
Generation Group
R. R. J. Rohr belongs to the GI Generation group.
Place of Birth: Strasbourg
Place of Death: Robertsau
Occupation: gnomonist | sailor | astronomer | writer
Employers: Groupe Caisse d’épargne
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 October 20, 1905
Note: Moon position is location and time sensitive.| Planet | Position (Tropical, Western) | Transits on October 20, 2025 | Secondary Progressions for October 20, 2025 |
|---|---|---|---|
| Sun | 26 Libra 25 | 27 Libra 20 | 27 Aquarius 56 |
| Moon | 14 Cancer 8 | 15 Libra 59 | 15 Sagittarius 7 |
| Mercury | 1 Scorpio 55 | 19 Scorpio 27 | 25 Aquarius 13 |
| Venus | 28 Virgo 26 | 8 Libra 12 | 28 Aquarius 41 |
| Mars | 8 Capricorn 50 | 19 Scorpio 20 | 9 Aries 23 |
| Jupiter | 5 Gemini 10 | 24 Cancer 22 | 27 Taurus 23 |
| Saturn | 26 Aquarius 47 | 26 Pisces 18 | 4 Pisces 56 |
| Uranus | 0 Capricorn 54 | 0 Gemini 42 | 7 Capricorn 12 |
| Neptune | 10 Cancer 25 | 0 Aries 2 | 7 Cancer 52 |
| Pluto | 22 Gemini 37 | 1 Aquarius 22 | 20 Gemini 46 |
| Rahu | 26 Leo 58 | 16 Pisces 0 | 20 Leo 37 |
| Ketu | 26 Aquarius 58 | 16 Virgo 0 | 20 Aquarius 37 |
Chandra Kundali (Equal House, North Indian Diamond Chart)
