Bluehour: Twilight Cities
Never miss the golden hour again. Real-time twilight forecasts for 200+ cities worldwide.
Download Bluehour: Twilight CitiesToday's golden hour ends in 47 minutes. Don't miss tomorrow's.
Never miss the golden hour again. Real-time twilight forecasts for 200+ cities worldwide.
Download Bluehour: Twilight CitiesToday's golden hour ends in 47 minutes. Don't miss tomorrow's.
Claim exclusive photography rewards inspired by the magic of twilight
Wagering requirements apply. Minimum deposit required for match bonuses. New players only. Promotional codes valid for 30 days from issue date. Terms and conditions apply.
Bluehour: Twilight Cities calculates precise civil, nautical, and astronomical twilight windows using solar elevation algorithms calibrated for over 200 major cities worldwide. The app tracks the sun's position relative to the horizon in real-time, providing photographers with exact minute-by-minute countdowns to golden hour onset and blue hour peak.
The core engine processes geographic coordinates, timezone offsets, and atmospheric refraction data to predict the three distinct twilight phases: civil twilight when the sun sits 0-6 degrees below horizon, nautical twilight at 6-12 degrees, and astronomical twilight extending to 12-18 degrees. Each phase produces unique lighting conditions critical for landscape and urban photography.
Location-aware notifications trigger 30 minutes before optimal shooting windows. The app factors in seasonal variation, calculating how twilight duration shifts from 20 minutes near the equator to over 90 minutes in northern latitudes during summer months. Integrated compass overlay shows precise sunset azimuth angles, helping photographers position themselves for ideal composition alignment with city landmarks.
Save unlimited cities to your watchlist and monitor golden hour windows across different time zones simultaneously. Perfect for travel photographers planning shoots in multiple destinations or comparing seasonal twilight patterns between hemispheres.
Separate countdowns for civil, nautical, and astronomical twilight phases with color-coded visual indicators. Each phase displays remaining duration, sun elevation angle, and optimal photography techniques for that specific lighting condition.
Augmented reality compass overlay shows precise direction where the sun will set, overlaid on live camera view. Plan compositions in advance by seeing exactly where sunset glow will align with skyline features, bridges, or architectural elements.
Customizable push notifications trigger 15, 30, or 60 minutes before your chosen twilight phase begins. Set different alert preferences for weekdays versus weekends, ensuring you never miss optimal shooting light on your schedule.
Interactive yearly view displays twilight duration trends across all seasons. Identify the longest golden hours in your city, plan shoots around solstice extremes, and discover how twilight windows shift week by week throughout the year.
All twilight calculations run locally on device using cached astronomical data. No internet connection required once cities are added. Perfect for remote location shoots where cellular coverage is unreliable but precise timing remains critical.
Twilight Studios has specialized in solar calculation applications since August 2026, serving the professional photography community with precision timing tools.
Version 2.4.1 released 15.08.2026 for Android platform. The development team includes former astrophysics researchers who contributed to NASA solar position libraries, ensuring astronomical accuracy in every calculation.
Bluehour: Twilight Cities remains completely free with no in-app purchases, supported by the studio's commitment to accessible professional photography tools.
Free on Android 8.0 and above. No account required. Installs in under 30 seconds. Start tracking twilight tonight.
Download for Android6.8 MB download. Rated E for Everyone. Works offline after initial city setup.