Tools

External Services using PVGIS¶

• https://forecast.solar/heatmap.html

Other Tools¶

Open Source Tools¶

• Open Source Tools for PV Modeling, a catalog of open source tools in the domain of photovoltaics.

NREL (National Renewable Energy Laboratory)¶

• NREL Solar Radiation Data Manual

NOAA (National Oceanic and Atmospheric Administration)¶

• Solar Calculator
• AntUV Solar Calculator
• Solar Equations PDF
• Calculation Details
• NOAA Solar Calculator Implementation in Swift

https://andrewmarsh.com/¶

Hands down, one awesome set of resources and interactive applications!

Applications¶

In https://drajmarsh.bitbucket.io/:

• Interactive Earth-Sun Relationship Tool
• 2D Sunpath Diagram
• 3D Sunpath Diagram

Significant Dates and Times¶

• Significant Dates
• Significant Times

Skyfield (Astronomical Calculations)¶

• Examples : https://rhodesmill.org/skyfield/examples.html#what-time-is-solar-noon-when-the-sun-transits-the-meridian

• Sunrise/Sunset : https://techoverflow.net/2022/06/19/how-to-compute-sunrise-sunset-in-python-using-skyfield/

• UTC and Leap Seconds : https://rhodesmill.org/skyfield/time.html#utc-and-leap-seconds

Programming Resources & Libraries¶

JavaScript

• Solar Calculator JavaScript Library

• NOAA Solar Position Calculator Implementation

  Implementation of USA's National Oceanic and Atmospheric Administration (NOAA) Solar Calculator, allowing to find Sunrise, Sunset, Solar Noon and Solar Position for Any Place on Earth.

R

• Photobiology Solar Calculations in R

Ruby

Sun - Solar Calculator for Ruby

> Sun is a solar calculator for Ruby based on the National Oceanic &
> Atmospheric Administration (NOAA) solar calculator. Sunrise and sunset
> results are apparent times and not actual times (due to atmospheric
> refraction, apparent sunrise occurs shortly before the sun crosses above the
> horizon and apparent sunset occurs shortly after the sun crosses below the
> horizon).