Observed arrival · 2026-10-15
Statistics Lab maps sunlight across Tokyo’s buildings
A public-data project calculates sunlight for individual buildings across Tokyo’s 23 wards, with results available on pages and as JSON.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- People comparing sunlight at buildings in Tokyo’s 23 wards
- Worth noticing
- The site says its calculations cover about 1.96 million buildings and factor in shadows from nearby buildings and terrain.
Field notes
The listed source materials include Japan’s national census small-area boundaries and postal-code data, alongside the Project PLATEAU 3D city model. The homepage says the project provides both human-readable pages and JSON for programs, and links to index.json, llms.txt, openapi.json, and status.json. It identifies the source-data date as 2026-04-17 and the page generation time as 2026-10-14.
Observed signals
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
◉HumanPersonal, local, civic, or handmade
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