...or the first might be (if *PASS*\s is always last before the newline, as your data suggests): 
while ( <DATA> ) 
   {
   print "$_ \n";
   if ( $_ =~ /(\*PASS\*)\s$/ ) 
      {
      print "\n \$1 is: $1 \n";
      }
   else 
      {
      print "Not found\n";
      }
   }

__DATA__
 
2005-11-04/08:02:14.011 METRIC 00020036-0800093A log :Monitor: CALLER 
+Status *PASS* 
2005-11-04/08:09:34.712 METRIC 0A475-11B  Log :monitor: CALLER Status 
+*FAIL*
2005-11-04/08:11:30.924 METRIC 00020036-08000940 log :Monitor: CALLER 
+Status *PASS* 
2005-11-04/08:12:29.830 METRIC 00020036-08000941 log :Monitor: CALLER 
+Status *PASS* 
2005-11-04/09:12:28.790 METRIC 00020036-08000943 log :Monitor: CALLER 
+Status *PASS* 
2005-11-04/09:12:35.869 METRIC 00020036-08000944 log :Monitor: CALLER 
+Status *PASS*

[download]

output is: 
2005-11-04/08:02:14.011 METRIC 00020036-0800093A log :Monitor: CALLER 
+Status *PASS*


 $1 is: *PASS*
2005-11-04/08:09:34.712 METRIC 0A475-11B  Log :monitor: CALLER Status 
+*FAIL*

Not found
2005-11-04/08:11:30.924 METRIC 00020036-08000940 log :Monitor: CALLER 
+Status *PASS*


 $1 is: *PASS*
2005-11-04/08:12:29.830 METRIC 00020036-08000941 log :Monitor: CALLER 
+Status *PASS*


 $1 is: *PASS*
2005-11-04/09:12:28.790 METRIC 00020036-08000943 log :Monitor: CALLER 
+Status *PASS*


 $1 is: *PASS*
2005-11-04/09:12:35.869 METRIC 00020036-08000944 log :Monitor: CALLER 
+Status *PASS*

 $1 is: *PASS*

[download]

In reply to Re^2: Parsing timestamps by ww
in thread Parsing timestamps by neilwatson

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.