title: R POSIXlt attrib shows IST as +6:30 whereas IST is +5:30
body: <p>R output reads</p>
  
  <p>POSIXlt in R shows </p>
  
  <pre><code>attr(,"tzone")
  #[1] "" "IST""+0630" 
  </code></pre>
  
  <p>whereas the actual IST (Indian Standard Time) is GMT +5:30</p>
  
  <p>Why is the difference and where is it explained in R documentation</p>
  
  <p>The entire command with output for your perusal (thanks in advance for the reply)</p>
  
  <pre><code>unclass(as.POSIXlt(Sys.time()))
  $sec
  [1] 36.357
  
  $min
  [1] 32
  
  $hour
  [1] 21
  
  $mday
  [1] 21
  
  $mon
  [1] 3
  
  $year
  [1] 120
  
  $wday
  [1] 2
  
  $yday
  [1] 111
  
  $isdst
  [1] 0
  
  $zone
  [1] "IST"
  
  $gmtoff
  [1] 19800
  
  attr(,"tzone")
  [1] ""      "IST"   "+0630"
  </code></pre>