Observed arrival · 2026-10-25
FlatAtlas puts flat-Earth models beside the real sky
A 3D simulator compares published flat-Earth maps and claims about the Sun and Moon with astronomical positions for a chosen place and time.
○Open
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✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Readers testing flat-Earth claims against astronomy
- Worth noticing
- Its Bratislava example calculates that Rowbotham’s sunset rule leaves the Sun at least 11° above the horizon.
Field notes
The page attributes model figures to the Flat Earth Society, the Flat Earth Wiki, and Rowbotham’s 1881 book, and distinguishes claims that provide calculable numbers from those that do not. It identifies the map as a north-polar azimuthal equidistant projection and describes optional time-zone, solar-path, and Gleason 24-hour-ring layers. A Bratislava example applies Rowbotham’s horizon rule to calculate a predicted sunset position.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
$PaidCommerce or pricing visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue