XKCD 3207: When did the largest share of the population…
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XKCD 3207: When did the largest share of the population live within 5° of zero magnetic declination?
I got nerd sniped by the title text of XKCD 3207 https://xkcd.com/3207/:
>'The zero line in WMM2025 passes through a lot of population centers; I wonder what year the largest share of the population lived in a zone of less than 5° of declination,' he thought, derailing all other tasks for the rest of the day.
With some help from Claude Code, I built an interactive visualization https://awhogue.github.io/zero-declination/output/ to answer the question.
Data sources and code. https://github.com/awhogue/zero-declination
#education
source
I got nerd sniped by the title text of XKCD 3207 https://xkcd.com/3207/:
>'The zero line in WMM2025 passes through a lot of population centers; I wonder what year the largest share of the population lived in a zone of less than 5° of declination,' he thought, derailing all other tasks for the rest of the day.
With some help from Claude Code, I built an interactive visualization https://awhogue.github.io/zero-declination/output/ to answer the question.
Data sources and code. https://github.com/awhogue/zero-declination
#education
source
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