Overview
- The video, posted by Reddit user RedditorofReddit07, tracks a building’s shadow at the same clock time from March 2024 to March 2025.
- The marked points form an analemma, a figure eight produced by Earth’s 23.5-degree axial tilt plus its slightly elliptical orbit.
- NOAA’s explanation confirms that same-time daily observations of the Sun trace this pattern, which drives predictable shifts in ground shadows.
- Coverage notes the result aligns with the round-Earth model, whereas common flat-Earth diagrams cannot reproduce the location-dependent shapes.
- Outlets report that repeating the experiment at different latitudes should yield distinct curves, providing a simple, repeatable check for readers.