<p>Given the following JSON Date representation:</p>

<pre><code>"\/Date(1221644506800-0700)\/"
</code></pre>

<p>How do you deserialize this into it's JavaScript Date-type form?</p>

<p>I've tried using MS AJAX JavaScrioptSerializer as shown below:</p>

<pre><code>Sys.Serialization.JavaScriptSerializer.deserialize("\/Date(1221644506800-0700)\/")
</code></pre>

<p>However, all I get back is the literal string date.</p>

The big number is the standard JS time
```
```
new Date(1221644506800)
```
```
Wed Sep 17 2008 19:41:46 GMT+1000 (EST)