Decision Workspace
spa vs solar-positioning vs astronomical-calculator
Side-by-side comparison of Rust crates
49
spa
growingv0.5.1
The Solar Position Algorithm module (SPA) for Rust calculates the sunrise-sunset and azimuth and zenith-angle for specific geo-position and time (UTC); for example for solar-panel-alignment or automotive.
56
solar-positioning
experimentalv0.5.1
High-accuracy solar positioning algorithms (SPA and Grena3) for calculating sun position and sunrise/sunset/twilight times
54
astronomical-calculator
experimentalv0.5.2
High-precision astronomical calculations for solar position, sunrise/sunset times, and related phenomena
Core Metrics
| spa | solar-positioning | astronomical-calculator | |
|---|---|---|---|
| Health Score | 49 | 56 | 54 |
| Total Downloads | 3.5M | 4.1K | 276 |
| 30d Downloads | 248.9K | 405 | 138 |
| Dependents | 77 | 0 | 3 |
| Releases | 8 | 17 | 9 |
| Last Updated | 775d ago | 3d ago | 15d ago |
| Age | 8y 4m | 6m | 3m |
Health Breakdown
spa
Maintenance
4
Quality
16
Community
8
Popularity
8
Documentation
13
solar-positioning
Maintenance
19
Quality
12
Community
6
Popularity
4
Documentation
15
astronomical-calculator
Maintenance
18
Quality
13
Community
8
Popularity
3
Documentation
12
Technical Details
| spa | solar-positioning | astronomical-calculator | |
|---|---|---|---|
| Version | 0.5.1 | 0.5.1 | 0.5.2 |
| Stable (≥1.0) | ✗ No | ✗ No | ✗ No |
| License | Apache-2.0 | MIT | MIT |
| Dependencies | 3 | 6 | 13 |
| Crate Size | 125KB | 63KB | 71KB |
| Features | 2 | 5 | 1 |
| Yanked % | 0.0% | 11.8% | 0.0% |
| Edition | 2021 | 2021 | 2021 |
| MSRV | — | 1.70 | 1.70 |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •solar-positioning leads with a health score of 56/100, but none of the options score above 80.
- •spa has the most downloads (3.5M), suggesting wider adoption.
- •⚠ spa has not been updated in over a year.