Twilight Types
Brian B.'s Climate Blog: Daylight-Twilight-Astronomical Maps
Sunrise and Sunset calendar. Sunrise, Sunset, Twilight, and Daylight Hours any city in the world
Spectralcalc.com Solar Calculator
Civil Twilight for Watch | App Price Drops
Sun/Moon Calculator Reference
Civil Twilight Calculator on the App Store
About Daylight Hours, Twilight, Civil Twilight, Nautical Twilight and Astronomical Twilight
Sun Position Calculator 1.1.0 Free Download
Astronomical Twilight – Definition and Explanation
Sunrise equation - Wikipedia
Civil Twilight Calculator by Aviametrix, LLC
Twilight - Wikipedia
Sun rise, set and twilight times calculated using a simple iterative scheme and implemented as a QBASIC program, an Excel spreadsheet using VBA and as a plain spreadsheet.
Civil Twilight Calculator on the App Store
Skyclock Latest Version v1.5-4-gbbc2b37 for Android
How do we get ship's position by star sight ? - MySeaTime
trigonometry - How to calculate civil twilight timings? - Mathematics Stack Exchange
Civil Twilight for Watch on the App Store
GitHub - BinaryBirds/Sunlight: Calculate dawn, dusk, golden and blue hour times by using various algorithms.
Astronomical Twilight - Sky & Telescope - Sky & Telescope
Astronomical Twilight – Definition and Explanation
Civil Twilight Calculator by Aviametrix, LLC
Sunrise, Sunset, and Twilight - Science Pickle
Nautical Twilight – Definition and Explanation
