Sjaak Neefjes, also known as Jacques J. Neefjes, is a Dutch immunologist born on December 8, 1959, in Grootebroek. He earned his Ph.D. from Leiden University in 1990, focusing on cellular biology aspects of major histocompatibility complexes (MHC). Neefjes led the tumor biology department at the Netherlands Cancer Institute from 1998 to 2008 and has been a professor of chemical immunology at Leiden University since 1999. His research includes antigen processing in the immune system and exploring chemotherapy mechanisms. He has received numerous accolades, including the Spinoza Prize in 2020.
Zodiac Sign (Western)
Sunsign, Tropical Zodiac
Zodiac Sign (Vedic)
Moonsign, Sidereal Zodiac
Age (Today)
Your next birthday is 356 days away.
Place of Birth
Time Zone -
Chinese Zodiac Sign
Birth Number
Life Path Number
Name Number (Chaldean)
Name Number (Pythagorean)
Meaning of the name - Sjaak
Supplanter, he who will supplant, God will prevail
Read Full Sjaak Name AnalysisDecember 8, 1959 Facts
Generation Group
Sjaak Neefjes belongs to the Baby Boomers group.
Place of Birth: Grootebroek
Educated At: NKI | Free University of Amsterdam
Occupation: biochemist | university teacher
Employers: NKI | Leiden University Medical Center | Sanquin | Free University of Amsterdam | University of Oslo | Leiden University
Awards Received: Spinoza Prize
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 December 8, 1959
Note: Moon position is location and time sensitive.| Planet | Position (Tropical, Western) | Transits on December 8, 2025 | Secondary Progressions for December 8, 2025 |
|---|---|---|---|
| Sun | 15 Sagittarius 51 | 16 Sagittarius 51 | 22 Aquarius 59 |
| Moon | 4 Aries 42 | 8 Leo 12 | 22 Leo 51 |
| Mercury | 25 Scorpio 29 | 26 Scorpio 16 | 5 Pisces 50 |
| Venus | 1 Scorpio 9 | 9 Sagittarius 54 | 20 Capricorn 11 |
| Mars | 3 Sagittarius 31 | 25 Sagittarius 2 | 22 Capricorn 3 |
| Jupiter | 13 Sagittarius 26 | 23 Cancer 58 | 27 Sagittarius 7 |
| Saturn | 7 Capricorn 4 | 25 Pisces 10 | 14 Capricorn 34 |
| Uranus | 21 Leo 2 | 28 Taurus 45 | 18 Leo 52 |
| Neptune | 8 Scorpio 3 | 29 Pisces 22 | 9 Scorpio 7 |
| Pluto | 6 Virgo 9 | 2 Aquarius 4 | 5 Virgo 11 |
| Rahu | 29 Virgo 57 | 13 Pisces 24 | 26 Virgo 27 |
| Ketu | 29 Pisces 57 | 13 Virgo 24 | 26 Pisces 27 |
Chandra Kundali (Equal House, North Indian Diamond Chart)
Astrology Transits Analysis for Year 2025
Note: Multiple transits occurring in close proximity often signify a major event in a person's life.Sjaak Neefjes's 2025 Transits to Natal Planets
- Saturn square Jupiter
Exact: 01 January, 2025 - Mars square Venus
Exact: 01 January, 2025 - Jupiter opposition Jupiter
Exact: 01 January, 2025 - Saturn square Sun
Exact: 21 January, 2025 - Rahu conjunction Ketu
Exact: 21 January, 2025 - Ketu conjunction Rahu
Exact: 21 January, 2025 - Jupiter opposition Jupiter
Exact: 12 March, 2025 - Jupiter opposition Sun
Exact: 01 April, 2025 - Mars square Venus
Exact: 21 April, 2025 - Saturn conjunction Ketu
Exact: 31 May, 2025 - Saturn opposition Rahu
Exact: 31 May, 2025 - Mars square Mercury
Exact: 10 June, 2025 - Jupiter trine Venus
Exact: 20 June, 2025 - Mars square Jupiter
Exact: 10 July, 2025 - Jupiter opposition Saturn
Exact: 10 July, 2025 - Mars square Saturn
Exact: 19 August, 2025 - Saturn conjunction Ketu
Exact: 19 August, 2025 - Saturn opposition Rahu
Exact: 19 August, 2025 - Mars conjunction Mercury
Exact: 28 October, 2025 - Jupiter trine Mercury
Exact: 07 November, 2025 - Mars conjunction Sun
Exact: 27 November, 2025
