I'd like to point out that this solution will also not work when the timezone is 12 or more hours on either side of GMT (I believe there are some that are off by 13 hours). It's probably best to stick with Date::Calc. 
$ date; TZ=GMT0 date       
Wed Jun  9 12:01:15 EDT 2004
Wed Jun  9 16:01:15 GMT 2004
$ TZ=GMT-12 perl foo.pl
06/09/2004
$ TZ=GMT+12 perl foo.pl
06/08/2004
$ TZ=GMT-13 perl foo.pl
06/09/2004
$ TZ=GMT+13 perl foo.pl
06/07/2004

[download]

In reply to Re: Answer: How do i find yesterday's date by dse
in thread How do i find yesterday's date by ganesh_saravanan

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.