MomentJS : Issue subtracting minutes
<p>This is my code that is deployed on Parse.com CloudCode :</p>

<pre><code>var now = new Date()
var then = moment(now).subtract(20, "minutes").toDate()

console.log(now)
console.log(then)
</code></pre>

<p>Why does <code>now === then</code> ?</p>

<p>What am I doing wrong ?</p>