If you print $^T it won't print the execution time. It will print the time in epoch when the program started to execute. If you want that to print in human readable then

use POSIX;
print POSIX::strftime "%a %b %e %H:%M:%S %Y", localtime($^T);

__END__
Wed Feb  4 17:45:10 2009
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Change the format to change the output.