Koppejan, Willem

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Koppejan, Willem Gender: M
Willem Ary Koppejan
born on 19 August 1913 at 04:00 (= 04:00 AM )
Place Amsterdam, Netherlands, 52n22, 4e54
Timezone LST m4e53 (is standard time)
Data source
BC/BR in hand
Rodden Rating AA
Collector: Koppejan
Astrology data s_su.18.gif s_leocol.18.gif 25°32' s_mo.18.gif s_piscol.18.gif 20°37 Asc.s_leocol.18.gif 16°15'

Willem Koppejan : rectified by himself, reported by his wife to Taeger - natal chart (Placidus)
Willem Koppejan : rectified by himself, reported by his wife to Taeger
natal chart (Placidus)
natal chart English style (Equal houses)
natal chart with Whole Sign houses
Alternative rectified time
rectified by himself, reported by his wife to Taeger
Date 19 August 1913 at 03:55 (= 03:55 AM )
Place Amsterdam, NETH, 52n22, 4e54
Timezone LST m4e53 (is standard time)
Astrology data s_su.18.gif s_leocol.18.gif 25°32' s_mo.18.gif s_piscol.18.gif 20°35 Asc.s_leocol.18.gif 15°22'

Portrait of Willem Koppejan 
(click to view image source)
Willem Koppejan
license fair-use


Dutch astrologer, the author of "Willem Koppejan's Astrological Archives - International and Nederland & Vlaanderen," published in 1996. With interests in religion and astrology, he was a writer and teacher, an astrological researcher and lecturer whose venues included the Astrological Association in England.

Willem studied medicine at the University of Leiden and had an active medical practice. Entering the field of astrology, he did horoscopes since 1924 and conducted his astrological practice in The Hague from 1945 till 1960, when he started publishing privately. From 1959, Willem had a joint astro-psychological practice in The Hague with his wife Dr. Helene Wilhelmina van Woelderen, whom he married in 1970. In 1977, they moved to Glastonbury, England.

He became mainly known for his research into the symbols and degrees of the zodiac, combining the Sabian symbols of Marc Jones and Dane Rudhyar with the degree symbols of the French Janduz (Madame J. Duzea). Willem met Dane Rudhyar in 1957 during his first visit to the U.S. with Helene, which later resulted in the publication by Carolus Verhulst of Servire of nine of Rudhyar's books in English as well as some lectures.

Willem wrote "The 360 Degrees of the Zodiac" in Dutch in 1956, which was later rewritten by his wife Helene in English with Niek Scheps as "The Zodiac Image Handbook" in three volumes, including his vision on Grail Astrology and published in 1989. The Dutch translation by Willem van Panhuys "Beeldgids van de dierenriem" in three volumes was published in 1991. Most of Willem's library on astrology and esoteric subjects is on loan to the Library of Avalon in the Glastonbury Experience, a complex of buildings with spiritual activities, started and financed by Willem and Helene in 1978.

He died on 5/20/1979 in England.

Link to Astrowiki (German)


  • associate relationship with Rudhyar, Dane (born 23 March 1895). Notes: exchanged data on the 360 Degrees of the Zodiac
  • other associate with Janduz (born 24 June 1874). Notes: Used the illustrations of Janduz in his Zodicac Handbook
  • (has as) teacher relationship with Ram, Theo (born 19 December 1884)
  • compare to chart of Ashe, Geoffry (born 29 March 1923). Notes: Both were fascinated by the spitiual effects of Glastonbury.


  • Work : New Job 1924 (Pro astrologer)
  • Social : Deinstitutionalized - prison, hospital 1941 in Den Haag (hided for Gremans and became astrologer in Den Haag)
  • Work : Begin Major Project 1945 (Started his practice, 15 years)
  • Work : Published/ Exhibited/ Released 20 August 1953 (Pyramide uurhoek)
    chart Placidus Equal_H.
  • Work : Published/ Exhibited/ Released 1956 in Den Haag (De 360 graden van de dierenriem)
  • Relationship : Marriage 3 April 1970 (Dr. Helene W. van Woelderen)
    chart Placidus Equal_H.
  • Work : Published/ Exhibited/ Released 1971 (J Bernard Nicklin: a Life with God and the Pyramid)
  • Family : Change residence 1977 (Moved to Glastonbury, England)
  • Death, Cause unspecified 20 May 1979 at 06:45 AM (Age 66)
    chart Placidus Equal_H.
  • Work : Published/ Exhibited/ Released 1991 (Beeldgids van de dierenriem)
  • Work : Published/ Exhibited/ Released 1998 (The Zodiac Image Handbook)

Source Notes

Tees Reitsma, a colleague, submits his data to Donna Cunningham's Astrologer's Memorial (Rectified by Koppejan to 3:55 from a given 4:00 AM Amsterdam time)

Cirkels quotes an astrology magazine for 4:05 AM.

Svi: Helene W. Koppejan-van Woelderen gives 19 August 1913 at 4:00 AM as his BC time and 3:55 AM as the by him and Niek Scheps corrected time based on a supposed 272 days gestation time (Beeldgids van de dierenriem, Volume 1).


  • Family : Relationship : Mate - Noted (Helene, worked and wrote together)
  • Personal : Religion/Spirituality : Metaphysical (studied Eastern and Western traditions.)
  • Vocation : Healing Fields : Alternative methods (Alternative medicine and astrology)
  • Vocation : Medical : Physician
  • Vocation : Occult Fields : Astrologer (Pro, data collector)
  • Vocation : Writers : Astrology (Books)