John Malcolm Hirst was a British aerobiologist born on April 20, 1921, in Marston Green. He is best known for inventing the Hirst spore trap, a significant advancement that allowed for the accurate monitoring of spore and pollen concentrations in the atmosphere. This invention played a crucial role in understanding plant disease epidemics, identifying airborne allergens, and providing pollen danger alerts, which greatly benefited individuals with allergic rhinitis. Following its introduction, many hospitals adopted the use of the spore trap for routine analysis.
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Meaning of the name - John
God is gracious
Read Full John Name AnalysisApril 20, 1921 Facts
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John Malcolm Hirst belongs to the GI Generation group.
Place of Birth: Marston Green
Occupation: biologist
Employers: Long Ashton Research Station
Awards Received: Distinguished Service Cross
Astrology Analysis
Ephemeris for April 20, 1921
Note: Moon position is location and time sensitive.| Planet | Position (Tropical, Western) | Transits on April 20, 2024 | Secondary Progressions for April 20, 2024 |
|---|---|---|---|
| Sun | 0 Taurus 3 | 1 Taurus 6 | 8 Leo 52 |
| Moon | 9 Libra 35 | 24 Virgo 59 | 8 Cancer 24 |
| Mercury | 10 Aries 33 | 16 Aries 57 | 19 Cancer 51 |
| Venus | 3 Taurus 18 | 19 Aries 11 | 25 Gemini 42 |
| Mars | 19 Taurus 8 | 22 Pisces 19 | 28 Cancer 52 |
| Jupiter | 9 Virgo 0 | 21 Taurus 43 | 18 Virgo 19 |
| Saturn | 19 Virgo 29 | 15 Pisces 37 | 22 Virgo 42 |
| Uranus | 8 Pisces 27 | 21 Taurus 50 | 8 Pisces 45 |
| Neptune | 10 Leo 57 | 28 Pisces 36 | 13 Leo 18 |
| Pluto | 6 Cancer 58 | 2 Aquarius 3 | 9 Cancer 11 |
| Rahu | 27 Libra 11 | 15 Aries 0 | 21 Libra 44 |
| Ketu | 27 Aries 11 | 15 Libra 0 | 21 Aries 44 |
Chandra Kundali (Equal House, North Indian Diamond Chart)
