WeekDay.js 213 Bytes Raw Blame History Permalink 1 2 3 4 5 6 7 8 9 10 'use strict'; var Day = require('./Day'); var modulo = require('./modulo'); // https://ecma-international.org/ecma-262/5.1/#sec-15.9.1.6 module.exports = function WeekDay(t) { return modulo(Day(t) + 4, 7); };