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 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
A C implementation of most of the book "Calendrical Calculations".
Julian date calculations and calendar conversions for Swift
Converts a regular JavaScript date to the modern Julian date format YYYYDDD.
Astrometric Java code
"Julian and his dates" calculates different Julian dates.
Converts a gregorian date to julian date.
🗓 🔍 Easy way to convert date julia to jsdate
DoD Ordinal Date ("Julian Date") converter
Small class to calculate various versions of the Julian date
Pequeño conversor entre calendarios que funciona en la terminal y en el navegador.
A python package for calendrical calculations
Converting dates to Julian Calendar, 2nd semester, 6th lab, computer science
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