A couple of tweaks improve it somewhat:

C:\test>perl -e "$x = scalar localtime (int(time()/43200)*43200 - $ARG
+V[0] * 86400); substr($x,11,9,''); print $x" 30
Thu Mar 20 2014

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In reply to Re^2: Find 30 days from today's date by BrowserUk
in thread Find 30 days from today's date by Anonymous Monk

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