The Minimum Viable Product MVP might not be a product after all.
But certainly is a great learning experience.
The user may:
The app requires custom maps with the features:
The math behind a world sunlight map at edesign.nl
The cloud -- according to Wikipedia
The cloud -- to scare off the suits
To just run Go:
The cloud -- for the practitioner
The Go gopher was designed by Renee French.
Easy to deploy a single file.
Hybrid apps seem to be a good bet, for the enthusiast and the enterprise.