nrel_spa 1.0.1

NREL Solar Position Algorithm for Dart and Flutter. Calculates solar zenith, azimuth, sunrise, sunset, and solar noon for any location and time. Pure Dart, zero dependencies, ±0.0003° accuracy.

Changelog

1.0.1 - 2026-05-25

Added

• Initial public release: NREL Solar Position Algorithm (SPA) port to Dart
• Exports: calcSpa, formatTime, SpaFormattedResult, SpaFormattedAnglesResult
• Exports: spaZa, spaZaInc, spaZaRts, spaAll
• 48 tests passing
• Pure Dart implementation