Civil Twilight vs FlightScore

A guide to sun and moon data for pilots and aviation enthusiasts. Easily determine where and when rises and sets will occur during flights and estimate the flight duration between the end of evening civil twilight and the beginning of morning civil twilight. Quickly compute daily solar and lunar almanac data, including moon phases and eclipses, for over 72,000 airports. Also calculate instantaneous sun and moon data to help with assessing airfield lighting conditions.

FlightScore — Know Before You Go Every preflight comes down to one question: what are the actual risks on this flight? FlightScore builds a 0–100 Safety Score from live weather, your personal minimums, and the FAA’s PAVE framework — giving you a clear, data-backed risk picture before you leave the ground. Low risk, elevated risk, or high risk: you’ll see exactly what’s driving the result, so you can make a confident, informed call. THE SAFETY SCORE & ADAPTIVE RISK An intelligent blend of live weather data and your personal Flight Risk Assessment Tool (FRAT). The engine dynamically calibrates its risk weights based on your flight context, with distinct profiles for night and IFR operations. Low risk means the assessed factors look favorable. High risk surfaces the specific concerns — crosswind limits, density altitude, a deteriorating TAF, or a SIGMET across your route. You always know exactly what the app is thinking, and why. SENTINEL: PROACTIVE FLIGHT SAFETY Sentinel works in the background to surface the threats standard decoders miss: Dynamic Personal Minimums: Automatically tightens your ceiling and visibility limits based on recent currency (30/60/90-day tiers), relaxing as you log regular hours. Sentinel Alerts & TAF Remarks: An AI-powered NOTAM scanner that flags operational show-stoppers — closures, ILS outages, PAPI down on a night flight — instantly. Deep-decodes the TAF RMK section for hidden threats like LLWS, PK WND, and frontal passages that standard decoders ignore entirely. Trip Watch & Divergence Detection: Monitors your route every 15 minutes before departure and sends push alerts if conditions deteriorate. In-flight, watches for live forecast divergence every 60 seconds so you’re never caught by a TAF that aged poorly. ADVANCED COCKPIT CHECKLISTS A completely reimagined checklist engine built for ground prep and high-stress in-flight workflows: Fly Mode: One tap switches to a simplified, large-text, high-contrast interface built for single-handed use in the cockpit. Emergency Phase Mapping: Tag phases as Normal or Emergency Procedures to give critical steps distinct, high-visibility visual treatment when it matters most. Smart Import: Drag-and-drop ordering, or import standard and ForeFlight-compatible CSV checklists that auto-match to the N-numbers in your hangar. Full offline caching ensures they work anywhere. AIPILOT — YOUR POH IN YOUR POCKET On-device AI reads your specific POH and approach plates. Ask “What’s my short-field takeoff distance at 4,500 feet density altitude?” and get the answer — even at an FBO with zero Wi-Fi. Your aircraft documents stay private and on your device. THE PILOT WORKSPACE Comprehensive Logbook: ForeFlight CSV import, currency tracking, and PDF export. Weight & Balance: Saved aircraft profiles with real-time CG envelope graphing. Moving Map: Fuel range rings, preferred routes, flight recorder, and OWNSHIP tracking. GLANCEABLE, EVERYWHERE A Home Screen widget keeps your Safety Score one glance away. Apple Watch surfaces weather trends on the drive to the airport. iCloud syncs your profile, logbook, and risk assessments across iPhone, iPad, and Mac — start your preflight at the kitchen table, finish it on the ramp. KNOW YOUR RISK. MAKE YOUR CALL. FlightScore is a decision-support tool for the pilot in command. It evaluates weather, NOTAMs, performance, and pilot risk factors — but it does not make go/no-go decisions, and it does not replace an official FAA weather briefing or qualified flight instruction. Under FAR 91.3(a), the pilot in command has final authority and responsibility for every flight. Privacy Policy: https://www.flightscore.ai/privacy.html Terms of Use: https://www.flightscore.ai/terms-of-service.html EULA: https://www.flightscore.ai/eula.html