title: New to Json/Java - what datatype is this? A datetime? 13 digits long. Using PHP
body: <p>I'm experimenting/learning with java and json. I'm trying to make my own data for a json parser and I can't figure out what datatype the example data it gives me is. I think it's a datetime, but I don't know how to get my date (regular format) to the json date format. I'm coding the example using PHP.</p>
  
  <p>Jsonp Example Data:</p>
  
  <pre><code>[1110844800000,178.61],
  [1110931200000,175.60],
  [1111017600000,179.29],
  </code></pre>
  
  <p>My Date and Data format:</p>
  
  <pre><code>2012-03-01 18:21:31,42
  2012-03-01 18:22:31,46
  2012-03-02 18:21:31,40
  </code></pre>
  
  <p>Does anyone know if the 13 digit date/time json above is a datetime specific to java or json? And if so, how to get my data to that format?</p>
  
  <p>Thanks!</p>