title: Convert DateTime to UTC date time
body: <p>As per my client requirement,I need to send current datetime in UTC format(below format).</p>
  
  <pre><code>FORMAT: YYYY-MM-DDTHH:MM:SS.MsMsMsZ     'Ms is milliseconds
  EXAMPLE: 2014-02-28T15:59:23.000Z       'Z is Time Zone Designator(TZD) and it must be Z
  </code></pre>
  
  <p>When I try to convert datetime in VB.Net I am getting the following format which is not 
  equivilant to above format. 
  Milliseconds should be only 3 digits and should show Z at the end.</p>
  
  <p>Here is my code.</p>
  
  <pre><code>DateTime.Now.ToString("o"))
  2019-03-13T16:47:55.9620000-06:00
  </code></pre>