This convinient solution for macOS utilizes the sunriset application made by andreaskw1978de to perform various kinds of calculations of sunrise, sunset, astronomical twilight, nautical twilight, and civil twilight for dates spanning from 1801 to 2099.
SunCalculator 1.1 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available.
Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. This free software for Mac OS X was originally developed by andreaskw1978de. The program lies within Education Tools, more precisely Science. The unique identifier for this app's bundle is com.yourcompany.SunCalculator. The most popular version of the software is 0.9.
From the developer:
The method after which the calculation is being performed by the SunCalculator is based on the sunriset application developed by andreaskw1978de
The SunCalculator calculate sunrise, sunset, astronomical twilight, nautical twilight and civil twilight for every date between 1801 to 2099.
You may want to check out more software for Mac, such as iRNAi, DesignWorks Professional or MoonDock, which might be related to SunCalculator.
Science Tools