SolarCalculator 3.3.0

dotnet add package SolarCalculator --version 3.3.0                
NuGet\Install-Package SolarCalculator -Version 3.3.0                
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="SolarCalculator" Version="3.3.0" />                
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add SolarCalculator --version 3.3.0                
#r "nuget: SolarCalculator, 3.3.0"                
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
// Install SolarCalculator as a Cake Addin
#addin nuget:?package=SolarCalculator&version=3.3.0

// Install SolarCalculator as a Cake Tool
#tool nuget:?package=SolarCalculator&version=3.3.0                

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Calculates the sunrise and sunset for a given date and location (using GEO coordinates). This library uses the method outlined NOAA Solar Calculations Day spreadsheet found at


Add this to your project in Visual Studio using NuGet Package Manager UI and ID SolarCalculator or using the Package Manager Console.

PM> Install-Package SolarCalculator

Sample Code

The sample code below shows how to initialize and call the Solar Calculator to get the sunrise and sunset for the given location.

Sunrise in Chicago

using System;
using Innovative.SolarCalculator;

// Geo coordinates of Oak Street Beach in Chicago, IL
// NOTE: the .Date is not necessary but is included to demonstrate that time input 
// does not affect the output. Time will be returned in the current time zone so it 
// will need to be adjusted to the time zone where the coordinates are from (there 
// are services that can be used to get time zone from a latitude and longitude position).
TimeZoneInfo cst = TimeZoneInfo.FindSystemTimeZoneById("Central Standard Time");
SolarTimes solarTimes = new SolarTimes(DateTime.Now.Date, 41.9032, -87.6224);
DateTime sunrise = TimeZoneInfo.ConvertTimeFromUtc(solarTimes.Sunrise.ToUniversalTime(), cst);

// Display the sunrise
Console.WriteLine($"View the sunrise across Lake Michigan from Oak Street Beach in Chicago at {sunrise.ToLongTimeString()} on {sunrise.ToLongDateString()}.");

Sunset in Michigan

// Geo coordinates of Benton Harbor/Benton Heights in Michigan
TimeZoneInfo est = TimeZoneInfo.FindSystemTimeZoneById("Eastern Standard Time");              
SolarTimes solarTimes = new SolarTimes(DateTime.Now, 42.1543, -86.4459);
DateTime sunset = TimeZoneInfo.ConvertTimeFromUtc(solarTimes.Sunset.ToUniversalTime(), est);

// Display the sunset
Console.WriteLine($"View the sunset across Lake Michigan from Benton Harbor in Michigan at {sunset.ToLongTimeString()} on {sunset.ToLongDateString()}.");
Product Compatible and additional computed target framework versions.
.NET net5.0 is compatible.  net5.0-windows was computed.  net6.0 is compatible.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 is compatible.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed. 
.NET Core netcoreapp1.0 was computed.  netcoreapp1.1 was computed.  netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 is compatible. 
.NET Standard netstandard1.3 is compatible.  netstandard1.4 was computed.  netstandard1.5 was computed.  netstandard1.6 was computed.  netstandard2.0 is compatible.  netstandard2.1 is compatible. 
.NET Framework net40 is compatible.  net403 was computed.  net45 is compatible.  net451 was computed.  net452 was computed.  net46 was computed.  net461 is compatible.  net462 was computed.  net463 was computed.  net47 was computed.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen30 was computed.  tizen40 was computed.  tizen60 was computed. 
Universal Windows Platform uap was computed.  uap10.0 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.
  • .NETCoreApp 3.1

  • .NETFramework 4.0

  • .NETFramework 4.5

  • .NETFramework 4.6.1

  • .NETStandard 1.3

  • .NETStandard 2.0

  • .NETStandard 2.1

  • net5.0

  • net6.0

  • net7.0

NuGet packages (1)

Showing the top 1 NuGet packages that depend on SolarCalculator:

Package Downloads

LED animation/information display framework

GitHub repositories (1)

Showing the top 1 popular GitHub repositories that depend on SolarCalculator:

Repository Stars
HomeGenie, the programmable automation intelligence
Version Downloads Last updated
3.3.0 81,796 5/30/2023
3.2.1 26,563 12/2/2022
3.2.0 1,121 12/2/2022
3.1.0 117,826 1/15/2022
3.0.6 115,302 8/4/2020
3.0.5 31,837 4/17/2020
3.0.4 1,377 4/16/2020
3.0.3 1,414 4/14/2020
3.0.2 1,399 4/14/2020
3.0.1 3,604 1/25/2020
2.0.4 51,809 10/17/2018
2.0.3 3,230 7/10/2018
2.0.2 8,739 10/2/2017
2.0.1 1,847 10/1/2017
2.0.0 1,953 9/29/2017
1.0.8 70,590 7/27/2014

v3.3.0 Corrections added for Polar Day and Polar Night (Nickztar)
v3.2.1 Added ReadMe to package.
v3.2.0 Added net 7.0 support.
v3.1.0 Added support for net 5.0 and net 6.0.
v3.0.6 Added calculations for Astronomical, Nautical and Civil Dawn and Dusk times (rbdavison).
v3.0.5 Reverted changes until further research can be done.
v3.0.4 Corrected date shifting issue.
v3.0.3 Added missing documentation.
v3.0.2 Added source code and symbol integration to NuGet package.
v3.0.1 Changed license to LGPL Public 3.0.
v3.0.0 Added support for multiple frameworks.
v2.0.4 Bug Fix - Removed internal date setting by string that was not compatible in all locales - t1m0thyj
v2.0.3 Added azimuth calculation - GeorgeHahn
v2.0.2 Corrected date portion of SolarNoon date and time. It was showing the correct time but the wrong day.
v2.0.1 Change default value for SolarNoon to the ForDate property.
v2.0.0 Converted to .NET Standard/Moved to GitHub.
v1.0.8 Added multiple .NET versions.
v1.0.7 Removed Angle class and referenced it from NuGet library.
v1.0.6 Updated NuGet package only.
v1.0.5 Added a class/data type called Angle to handle computations and conversions. This class inherently behaves as a type double so that pre-existing code is not broken.
v1.0.4 Change the type of ForDate to DateTimeOffset due to improper handling of Time Zone. This does not affected code already written against this method.
v1.0.3 Corrected a time issue causing the wrong sunrise and sunset times to be returned. All test cases passed.
v1.0.2 Added XML comments file.
v1.0.1 Updated license and project URL's in package.