Sun light and path calculation for photography
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I created this app to accurately calculate light windows like Golden hour, blue hour, etc. for a particular city/location. It helps you plan your photography time by knowing the exact time and direction of sun. It uses swiss ephemeris on the backend to calculate all the path and timings for most accurate data.It also has a 3D view of the sun's path on any day and at any point of the day for the location. Looking at the sun's direction and angle can help you plan your shoot correctly.It is a simple app with no sign-in needed or any ads. Hopefully it helps folks out there. Open to feedback/request for features.Considering an integration with weather APIs if this gains traction and people find it helpful
HN · launched Jul 5, 2026 · 7 upvotes (top 60%) · 0 views
Niche: stargazing and astronomy weather apps · 90 launches, 12 in the last 7 days ▼ -29% · Explore this niche →
Category and tags
- Media & entertainment
- Dev tools
- Prosumer
- Not AI
- Hobby / open-source project
Visit website ↗ Source listing ↗
More like this: all 90 launches in stargazing and astronomy weather apps →
Could you build this?
Yes The app calculates solar/lunar positions and light windows by wrapping established ephemeris calculation libraries (like SunCalc or Swiss Ephemeris) in a standard web dashboard.
Discussion
2 comments analyzed.
Concerns raised: webapp limitations compared to native app, uncertainty about webapp effectiveness
Feature requests: AR view of sun's path for shot planning, camera app integration
Competitors
Other products that read as similar to this one : 214 launches clear the similarity bar, closest 8 shown.
Attention rank: #80 of 215 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 180 days after the earliest competitor.
- Asterfold: Sunset Planner · ph · 2026-11-08 · 1 upvotes · similarity 0.57
- Sunclock · ph · 2026-11-03 · 2 upvotes · similarity 0.54
- Sunreach · ph · 2026-11-06 · 2 upvotes · similarity 0.54
- ZORIA · ph · 2026-09-22 · 1 upvotes · similarity 0.51
- Golden Hour · ph · 2026-11-08 · 1 upvotes · similarity 0.51
- Sun Hours: Solar Forecast · ph · 2026-10-05 · 2 upvotes · similarity 0.47
- Sunset Today · ph · 2026-10-27 · 1 upvotes · similarity 0.46
- I calculated sun/shade exposure for every seat at World Cup stadiums · hn · 2026-03-12 · 5 upvotes · similarity 0.46
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