<p><pre><code>  # sdate - Eternal September Date
  #
  # date -d &#x27;1993-09-01 UTC 8130 days&#x27;
  #
  # ce: .mshell;
  #
  s=`date --date=&quot;1993-09-01 UTC&quot; +%s`
  if [ -z $1 ]; then
    n=`date +%s`
  else
    n=`date --date=&quot;$1&quot; +%s`
  fi
  d=`expr \( $n - $s \) &#x2F; 86400 + 1`
  if [ $d -ge 1 ]; then
    echo September $d, 1993
  else
    echo Error: date not in Eternal September epoch
  fi
</code></pre>
And today is:<p>September 8153, 1993<p>Yes, I mourn the internet.