title: why Unix Time Stamp for same time is different in different timezone
body: <p>Why <code>7/18/2013 11:33</code> is different in GMT timezone and in my local Time Zone (Asia/kolkata)?
  As Unix time-stamp are the ticks being calculated since epoch time <code>1/1/1970 00:00:00 GMT</code> so i know that there the epoch time had occurred at different interval in different timezone but still. the number of second elapsed should have been same </p>
  
  <p>For example if I(+5:30 GMT) and My friend(+5:00 GMT) starts counting the ticks from 00:00 Hrs respectively so at 18:00 Hrs in both timezone number of ticks should be same. So why same thing is not true with the Unix time-stamp.</p>
  
  <p>Need to Understand the concept fully.</p>