13 lines
323 B
JavaScript
13 lines
323 B
JavaScript
'use strict';
|
|
|
|
var GetIntrinsic = require('../GetIntrinsic');
|
|
|
|
var $floor = GetIntrinsic('%Math.floor%');
|
|
|
|
// https://ecma-international.org/ecma-262/5.1/#sec-15.9.1.3
|
|
|
|
module.exports = function DayFromYear(y) {
|
|
return (365 * (y - 1970)) + $floor((y - 1969) / 4) - $floor((y - 1901) / 100) + $floor((y - 1601) / 400);
|
|
};
|
|
|