A birthplace is not a birth time
The Nobel record supplies the date and Cairo birthplace. That is enough to examine date-based sign stability, while angular placements would need a documented hour and the appropriate civil-time conversion for the era.
Planetary sign range for the recorded date
The possible signs cover hourly positions across the recorded date and every civil-day UTC offset from +14 to −12. Without a verified birth hour or offset, a body that crosses a sign boundary remains unresolved.
| Body | Possible signs | Reading note |
|---|---|---|
| Sun | Taurus | Same sign in all hourly samples |
| Moon | Gemini / Cancer | Birth hour or offset may change the sign |
| Mercury | Gemini | Same sign in all hourly samples |
| Venus | Aries | Same sign in all hourly samples |
| Mars | Cancer | Same sign in all hourly samples |
| Jupiter | Libra | Same sign in all hourly samples |
| Saturn | Aries | Same sign in all hourly samples |
Geocentric tropical positions. A sign shown twice cannot be narrowed down without a documented birth time and historical UTC offset.
Try this reading exercise
What would change if a family record supplied a reliable clock time? Which information could then be calculated in a full chart?
Birth-date source
Nobel Prize: Dorothy Crowfoot Hodgkin facts ↗ documents the date and place above.
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