Sun Clock
- ID
- 15295
- Status
- summarized
- Published
- 18 Aug 2026, 12:37 AM
- Fetched
- 19 Aug 2026, 6:08 AM
- Provider
- Hacker News
- Category
- dev-community
- Original URL
- https://sunclock.net/
- Source URL
- https://hnrss.org/best
Summary
- Score
- 3.0
- Created
- 19 Aug 2026, 6:10 AM
- Tags
- Audience
- developersvibe_coders
What happened
Sun Clock is a free, ad-free 24-hour web clock that visualizes sun position, sunrise/sunset, golden hour, twilight, and moon phase/times for your location. It adjusts its rotation direction based on hemisphere, works as an installable Progressive Web App, stores all location data locally with no cookies, and its source is MIT-licensed.
Why it matters
If you need a lightweight, privacy-respecting sun/moon timing reference for outdoor work, photography, or scheduling, this runs entirely client-side and is installable offline as a PWA. For builders, the MIT-licensed source and PWA-with-zero-server-state approach is a concrete example to study, but there is no API or SDK to integrate into your own apps.
Discussion angle
The design choices that make this a zero-backend, zero-cookie, fully client-side PWA — and whether that pattern is worth copying for your own small utility tools.