Civil Twilight Calculator 1.25

For professionals who operate outdoors, understanding daylight hours is essential. This application is particularly beneficial for pilots, as it provides crucial information regarding the transition from day to night, which varies according to FAA regulations based on specific needs.

Unlike many apps that rely on an internet connection to access twilight data from online databases, this application performs all celestial calculations internally. This unique feature allows users to determine the onset of night at their destination while still airborne, ensuring they remain informed regardless of connectivity.

Key features of the app include:

• Real-time calculations of sunrise and sunset based on your current GPS location, with updates occurring every minute and every 10 kilometers traveled.
• The ability to retrieve sunrise and sunset times for any of the built-in 11,000 airports worldwide.
• When connected to WiFi or cellular data, users can look up twilight times for any global address, with enhanced time zone accuracy due to internet access.
• Accurate forecasting of sunrise and sunset times extending up to 60 years into the past or future.
• Calculations for standard sunrise/sunset as well as Civil, Nautical, and Astronomical Twilight times.
• A section containing relevant FAA regulations for those needing a regulatory refresher.