Astronomical calculations
MIT License
Lune.js — Calculate the phases of the moon
A tiny JavaScript library for calculating sun/moon positions and phases.
A JavaScript locale library based on information extracted from the Unicode CLDR database
Fourmilab Calendar Converter as a library
Convert to and from time formats. Get manipulated time values.
A node.js package for Steven Levithan's excellent dateFormat() function.
Equations for computing the position of the Sun.
Formats JavaScript dates to relative time strings (e.g., "3 hours ago")
simple date math module
List of functions which you can use to replace moment.js + ESLint Plugin
A CJS version of dateformat, forked from node-dateformat
A lightweight javascript timezone library