WeekDay.js 214 Bytes Raw Blame History Permalink 1 2 3 4 5 6 7 8 9 10 11 'use strict'; var mod = require('../helpers/mod'); var Day = require('./Day'); // https://ecma-international.org/ecma-262/5.1/#sec-15.9.1.6 module.exports = function WeekDay(t) { return mod(Day(t) + 4, 7); };