solar-time

A single-hand clock with a dial that changes daily. It visualises solar time and the positions of celestial bodies. Unlike ordinary clocks, which are based on man-made conventions (e.g. daylight saving time), it follows the natural rhythms of the Sun and the seasons

🌅 Automatically start an OBS stream when the sun rises, and stop it when the sun sets

A lightweight and accurate Kotlin Multiplatform library for calculating Islamic prayer times, inspired by the Adhan algorithm and optimized for Android, iOS, JVM, and beyond.

☀ Find when sunrise, sunset, and different twilights happen for a given location, based on the NOAA ESRL Solar Calculator.

Equation of time

🕗 Calculate the time for sunrise and sunset

🌍 Solar time web service using Apodini

InsightBaZi open-source true-solar-time calculation reference for BaZi and Four Pillars tooling.

纯 Dart 天文与历法库：天体位置、节气月相、日月食、恒星、农历与太阳时，无运行时依赖。Pure Dart astronomy and calendar library: celestial positions, solar terms, moon phases, eclipses, fixed stars, Chinese calendars and solar time. No runtime dependencies.

A React website that shows your true solar time.

SceneryStack port of the NAAP 'Motions of the Sun' lab. Trace the Sun's daily path, compare sidereal and solar time, and explore the zodiac on the celestial sphere.