Open-source browser map tracks the Aug 12, 2026 total solar eclipse live

A Hacker News post points to eclipsefan.org, an open-source, browser-based interactive map for the total solar eclipse on August 12, 2026 — now only days away. The submission itself is essentially just a link, so the substance comes from the tool rather than any accompanying write-up: the shared view stacks layers for the umbral path, Besselian elements, a live-moving umbra, a 3D shadow render, a cloud-cover projection, and an OpenStreetMap base, centered on the northern Spanish coast near Cantabria, which lies on the path of totality.

The most practically useful piece is the cloud-projection layer. For eclipse viewing, clear sky at the right moment is the entire game, so overlaying forecast cloud cover onto the umbral track is exactly the planning aid chasers need to pick a viewing site along the path through Greenland, Iceland, and Spain. Being open source, the project is also inspectable and reusable rather than a locked-down commercial app.

Worth flagging for readers: the source material provided is only the headline and the map URL, with no article body — so there are no verifiable details here on authorship, license terms, data sources for the cloud forecasts, or accuracy claims. Those would need to be confirmed from the repository and the site itself before treating the tool as authoritative.