Vernal IoC container for TypeScript & JavaScript (with Babel Legacy Decorators)
Astronomical Gregorian and Jalali date conversion based on the Iranian calendar's equinox rule.
Tempo plugin that calculates precise astronomical seasons (solstices & equinoxes) using the Jean Meeus algorithm — hemisphere-aware, sub-minute accuracy
Convert Gregorian dates to the Nippur Sumerian ritual calendar
Pure client-side Thelemic date/time library. Drop-in JS embed for displaying the current date in the Thelemic calendar (sun and moon positions, docosade year).
Angular 11 Dynamic Breadcrumb
n8n community node for generating natal (birth) charts with full astrology calculations including planets, houses, and aspects using the Swiss Ephemeris
Fast, clear and simple interface for calculating date, week day and time in Solar, Julian, Gregorian calendar.
Provides dates for the Badí' (Bahá’í) calendar and conversions between Badí' and Gregorian dates.
A Bevy plugin for simulating realistic sun movement
Implementation of (a part of) map projections defined in the FITS World Coordinate System (WCS)
A pure Rust implementation of the SGP4 algorithm for satellite propagation