John William Jamieson Herivel was a British scientific historian and codebreaker during World War II at Bletchley Park. He is most noted for his discovery of what is known as the Herivel tip, a crucial method for analyzing the Enigma cipher. This technique was based on Herivel's understanding of the behaviors of German Enigma operators, allowing Bletchley Park to deduce parts of daily keys. After the war, he became an academic, focusing on the history and philosophy of science at Queen's University Belfast, particularly studying figures like Isaac Newton.
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Moonsign, Sidereal Zodiac
Age (Today)
Your next birthday is 341 days away.
Death Anniversary
Next death anniversary is 246 days away.
Death Date
Place of Birth
Time Zone - Europe/London (1:0 E)
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Meaning of the name - John
God is gracious
Read Full John Name AnalysisAugust 29, 1918 Facts
Generation Group
John Herivel belongs to the GI Generation group.
Place of Birth: Belfast
Place of Death: Oxford
Educated At: Methodist College Belfast | Sidney Sussex College
Occupation: cryptanalyst | biographer | historian | mathematician
Employers: Campbell College | Queen's University Belfast | All Souls College | Bletchley Park
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 29, 1918
Note: Moon position is location and time sensitive.| Planet | Position (Tropical, Western) | Transits on August 29, 2025 | Secondary Progressions for August 29, 2025 |
|---|---|---|---|
| Sun | 5 Virgo 16 | 6 Virgo 22 | 21 Sagittarius 39 |
| Moon | 13 Gemini 23 | 16 Scorpio 39 | 6 Taurus 29 |
| Mercury | 12 Virgo 7 | 22 Leo 23 | 1 Capricorn 9 |
| Venus | 13 Leo 5 | 4 Leo 30 | 26 Sagittarius 37 |
| Mars | 7 Scorpio 47 | 14 Libra 16 | 25 Capricorn 22 |
| Jupiter | 9 Cancer 18 | 17 Cancer 25 | 12 Cancer 56 |
| Saturn | 21 Leo 0 | 0 Aries 4 | 28 Leo 58 |
| Uranus | 25 Aquarius 17 | 1 Gemini 27 | 24 Aquarius 26 |
| Neptune | 7 Leo 54 | 1 Aries 24 | 9 Leo 2 |
| Pluto | 6 Cancer 21 | 1 Aquarius 48 | 5 Cancer 52 |
| Rahu | 18 Sagittarius 18 | 18 Pisces 45 | 12 Sagittarius 38 |
| Ketu | 18 Gemini 18 | 18 Virgo 45 | 12 Gemini 38 |
Chandra Kundali (Equal House, North Indian Diamond Chart)
