Fast, reliable Rust APIs for solar position and Jewish Zmanim calculations from any date and location.

Revolutionary CSS/JavaScript system for real-time, environment-based website theming. Automatically adjusts colors based on location, time, and weather conditions.

SunMoonTimes is a .NET library for accurate solar and lunar position calculations. It provides sunrise, sunset, moonrise, and moonset times, plus azimuth and elevation angles for any observer location and time—past, present, or future.

Sun and planet positions with rise and set times using R Shiny web app