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
A C implementation of most of the book "Calendrical Calculations".
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.
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
Converts a gregorian date to julian date.
🗓 🔍 Easy way to convert date julia to jsdate
"Julian and his dates" calculates different Julian dates.
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.
Small class to calculate various versions of the Julian date
Julian Day Calculator converts between Gregorian calendar dates and Julian Day Numbers (JDN). Julian Day is a continuous count of days used in astronomy and historical research.
A python package for calendrical calculations
An improved algorithm for Julian date calculations
A model of precision timekeeping
Julian Date gadget for Windows. main branch: https://barionleg.github.io/JulianDate/source/Julian.html
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