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tmn/Friday13.js

Created December 12, 2014 09:17
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Friday13.js
for (var d = new Date(1337, 0, 1), c = 0, date = new Date(Date.now()); d <= date; d.setMonth(d.getMonth() + 1), d.setDate(13)) {
if (d.getDay() === 5)
++c
}
console.log(c);
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