Civil Twilight Calculator
Civil Twilight Calculator is made and published by Aviametrix, LLC. AppBrain is an independent app data site and isn't affiliated with Aviametrix, LLC. The app name, icon, screenshots and description belong to Aviametrix, LLC and are shown as published on the App Store.
AppBrain's verdict
Established- Rating on App Store
- 5.00
- 5 ratings
- Last updated
- January 5, 2026
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Releases
Updates seen on the App Store- Version
- 1.26
- Launched
- October 2016
No changelog data
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Technology
Found in the app by AppBrain- Price
- $0.99
- App size
- 7.56 MB
- Content rating
- Everyone
Technologies used by Civil Twilight Calculator
About the app and developer
About Civil Twilight Calculator
Civil Twilight Calculator is a lifestyle app developed by Aviametrix, LLC.
User Ratings
Civil Twilight Calculator is rated 5.00 out of 5 stars. The rating is based on 5 ratings.
App Information
Civil Twilight Calculator costs $0.99. The app size is 7.56 MB. The latest version available is 1.26. The last update was on January 5, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on the App Store since October 2016.
Developer information for Aviametrix, LLC
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Store listing
By Aviametrix, LLC, from the App Store
Description by Aviametrix, LLC Written by the developer, not by AppBrain. Click to read.
Pilots often need to know when night occurs. The FAA uses several different times of day for calling night vs. day, depending on the purpose.
Most Apps find the twilight times by going to a database on the internet. That means you need a network connection to use them.
This app is unique because it does all the celestial calculations internally! No internet required! Find the start of night at your destination while you are still in the air!
Lots of features:
Find sunrise and sunset at your current GPS location. Update sun calculations and sun dial every minute and every 10 km of movement.
Find sunrise and sunset at any airport in the world (The app has built-in coordinates for 11,000 airports around the world)
If you are connected (WiFi or Cell Data), you can look up the twilight times at any address in the world. Internet or cell access now also improves time zone accuracy.
The App calculates sunrise and sunset accurately forwards and backwards in time for 60 years.
The App calculates regular (standard) Sunrise/Sunset, Civil Twilight, Nautical Twilight, and Astronomical Twilight.
The App contains the relevant FAA regulations if you need a refresher!