title: Is the Unix Timestamp(UTC) and Java UTC same? Can we compare?
body: <p>I am afraid, this would seem duplication of many questions on this same context, but i couldn't find any answers for me in that. </p>
  
  <p>What i want is a comparison between two UTC's. One generated in java and one in PHP. I find both UTC (millisecond strings) entirely different. </p>
  
  <p>The real case is an expiry calculation for authorization. I can allow a 3 minute expiry for a token. The token may be coming from any of the Local servers all over the world. </p>
  
  <p>Can any one suggest a soln for this?...</p>
  
  <p>thanks for your help</p>