Sources & attribution
Primary geometry first, licensed/open climate background second, and no copied competitor database.
NASA GSFC eclipse predictions
Primary source for eclipse path geometry, central-line duration, path width and greatest-eclipse information.
NASA GSFC — Path of the Total Solar Eclipse of 2027 Aug 02
NASA GSFC — Besselian Elements
NASA Science — Future Eclipses
Acknowledgment: Eclipse Predictions by Fred Espenak (NASA's GSFC).
Climate background
Eclipsophile — 2027 eclipse climatology analysis provides expert interpretation of the cloud pattern along the path. Underlying cloud-climate context includes EUMETSAT/CM SAF products.
EUMETSAT CM SAF — Cloud Fractional Cover dataset is listed as free and unrestricted / CC BY 4.0 in the catalogue. We do not redistribute raw numerical CM SAF data in this build.
Weather API policy
The site does not use Open-Meteo's free hosted endpoint in production. Their current terms restrict the free API to non-commercial use, while an advertising-supported website is treated as commercial use. This avoids silently building monetization on an incompatible API tier.
Other sources
Government travel advice, local access rules and transport information change over time and are intentionally not hard-coded as permanent facts. Users should verify them before booking and again before travel.
Short-range weather: MET Norway
Near the event, TotalityTrip can use MET Norway Locationforecast 2.0, a global short-range forecast service. MET Norway states that Weather API data is freely available under open licenses including commercial use, subject to attribution and service-usage rules. Requests are proxied and cached by TotalityTrip. Displayed values are a selected and reformatted subset of the upstream forecast; this transformation does not imply endorsement by MET Norway.
Attribution: Based on data from MET Norway. CC BY 4.0 / applicable open-data licensing.
MET Weather API Terms of Service · Licensing and Data Policy