Civil Twilight Calculator
Not in any tracked top chart right now.
Updated 23 Oct 2026 · rankings refresh through the day
17 Oct 2026Civil Twilight Calculator at a glance
AI summary written from our chart and store data, 2026-10-17. It can be wrong: check the numbers above.
A specialized utility for pilots and outdoor professionals that calculates sunrise, sunset, and various twilight phases using internal celestial algorithms without requiring an internet connection. The app currently ranks #3 in the paid Lifestyle category and #172 overall in the paid section of the Taiwan App Store.
Similar apps: Sun Surveyor, PhotoPills, Civil Twilight
Civil Twilight Calculator on the App Store
App details
Civil Twilight Calculator downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Active users
All platforms, worldwide. Free with an account.
How this is calculated
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
What users say about Civil Twilight Calculator
From recent reviews.
About Civil Twilight Calculator
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!
