DayFromYear.js 256 B

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  1. 'use strict';
  2. var floor = require('./floor');
  3. // https://262.ecma-international.org/5.1/#sec-15.9.1.3
  4. module.exports = function DayFromYear(y) {
  5. return (365 * (y - 1970)) + floor((y - 1969) / 4) - floor((y - 1901) / 100) + floor((y - 1601) / 400);
  6. };