Astronomical space coordinate and time conversion. Calculate Julian day, local sidereal time and ecliptic obliquity with great precision.
C ++ library for working with date and time
The Rust JPL Ephemeris Reader is a Rust project designed to read NASA JPL ephemeris data and provide planetary positions based on a given Julian date.
A C implementation of most of the book "Calendrical Calculations".
Julian date calculations and calendar conversions for Swift.
A Swift framework containing an astronomical model of the Moon, including properties to obtain the age, percent illuminated, phase, transitions, and other properties of the Moon at a point in time. This is a Swift port of John Walker's `moontool.c`, originally written in 1987.
.NET library for working with historical dates
Converts a regular JavaScript date to the modern Julian date format YYYYDDD.
Astrometric Java code
DoD Ordinal Date ("Julian Date") converter
An educational astronomy calculation toolkit with a soul. Show your work with --verbose mode. Sun/Moon positions, rise/set times, twilight, phases, coordinate transforms, Julian dates, and visibility planning. Pure Python, no compiled dependencies.
Converts a gregorian date to julian date.
🗓 🔍 Easy way to convert date julia to jsdate
"Julian and his dates" calculates different Julian dates.
Small class to calculate various versions of the Julian date
A python package for calendrical calculations
A model of precision timekeeping
An improved algorithm for Julian date calculations
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