title: What Data To Load Into moment-timezone
body: <p>I've read dozens of posts about Moment Timezone but I still have not found a clear answer to this: </p>
  
  <p>I have an application with users all over the world and regardless of the browsers time zone, I ALWAYS want to display a date &amp; time as EST or EDT, whichever is in effect at the time ("America/New_York"). Does moment-timezone.js need to be loaded only with data for America/New_York since that is the only time zone I want to display, or do I need data for all time zones where a user may be in order for moment-timezone to be able to convert from that time zone to America/New_York? I need to be able to convert FROM any time zone because as new users come onboard I cannot know in advance what timezone they (and their browser) will be.  </p>
  
  <p>Right now I am using moment-timezone-with-data.js but it's 190KB.  At this point I think I would rather make a quick AJAX request and get the date &amp; time from the server - it's easy to get the current date/time in the desired time zone in PHP.  </p>