Sun Clock
This neat web app presents a 24-hour "Sun Clock," visualizing the sun and moon's positions and celestial events for any location, with a unique directional rotation based on your hemisphere. Hacker News users appreciated the elegant, privacy-focused design and the concept of re-imagining time. It sparked a discussion on alternative time representations and the practicalities of precise solar tracking, alongside requests for new features.
The Lowdown
The "Sun Clock" is a beautifully minimalist web application that redefines how users perceive time by anchoring it to celestial movements rather than arbitrary clock faces. It dynamically displays the sun's and moon's positions, alongside key solar events like sunrise, solar noon, and sunset, all tailored to the user's specific location.
- Celestial Timekeeping: The core function revolves around a 24-hour clock face that visually tracks the sun's journey across the sky and the moon's phase and position.
- Location-Aware Dynamics: Utilizing geolocation, the clock customizes its display, including a fascinating feature where its rotational direction mirrors the sun's perceived movement in either the Northern or Southern Hemisphere.
- Comprehensive Solar/Lunar Data: Beyond just positions, it provides precise timings for sunrise, solar noon, sunset, golden hour, and various twilights, as well as moonrise and moonset.
- User Experience & Privacy: The app is designed as a Progressive Web App (PWA) for offline access, is free, ad-free, and emphasizes user privacy by storing location and settings locally in the browser without cookies.
- Open Source & Interactive: The project is open-source (MIT licensed) and interactive, allowing users to hover or tap segments for detailed time information.
This innovative approach to time visualization offers a refreshing perspective on our daily rhythms, grounding them in the natural celestial cycle rather than conventional time zones.
The Gossip
Alternative Timekeeping Aspirations
Many users were inspired to share their own unique clock projects or desired features, suggesting a strong community interest in unconventional time displays. Discussion included a base-12 24-hour clock and a "sunsignal" app for optimizing daily schedules around solar cycles, highlighting the creativity sparked by the Sun Clock.
Feature Fantasies and Practical Ponderings
Users proposed various enhancements for the Sun Clock, such as manual location selection (though it was already available), a regular 12-hour clock overlay, the ability to compare times in different locations via a map, and placing "true noon" at the top of the clock face. There was also a notable rant about Apple Watch face limitations hindering similar concepts.
Geographical & Chronological Clarifications
Comments clarified nuances around timekeeping, particularly the distinction between "solar noon" and standard clock noon, highlighting how solar noon rarely aligns with 12 pm due to timezone centers and daylight saving time. There was also helpful clarification that manual latitude/longitude input was indeed available in the settings, addressing some user queries.