10 lines
213 B
JavaScript
10 lines
213 B
JavaScript
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'use strict';
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var Day = require('./Day');
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var modulo = require('./modulo');
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// https://ecma-international.org/ecma-262/5.1/#sec-15.9.1.6
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module.exports = function WeekDay(t) {
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return modulo(Day(t) + 4, 7);
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};
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