title: how far can the epoch time go back in time?
body: <p>I was trying out <a href="http://www.epochconverter.com/" rel="nofollow">http://www.epochconverter.com/</a> and I can do year 100, but when I go to year 99, it seems to break down and report 1999 instead of 0099.  Is this a bug?  How far back is epoch time supposed to be able to represent.</p>
  
  <p>I also tried plugging in MIN_LONG+1 to joda-time which reported -292275055-05-16T16:47:04.192Z so basically year -292275055 which sounds a bit more correct than 1999 and epochconverter.com can't even parse the min long.</p>
  
  <p>What is the minimum value of epoch time allowed?  Can I use min long?</p>
  
  <p>thanks,
  Dean</p>