Thanks for this illustration. I have some small suggestions, however.

• There is no need to "use" a module multiple times within the same scope.
• When you have imported a symbol into the current namespace there is no need to use the package name to refer to it.
• There is no need to declare variables which are not used ($wday, $yday, $isdst). If the others aren't used beyond the print statement, we don't need those either.
• print print is rather pointless since the first print just outputs the return value of the second.

Cleaning this up gives us:

use POSIX 'strftime';

print strftime ('%I:%M:%S %p - %a, %B %d, %Y', localtime (time)) . "\n
+";
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I prefer the brevity of this and think it aids clarity. However, here's the same but with 2 named variables just for completeness:

use POSIX 'strftime';

my $format = '%I:%M:%S %p - %a, %B %d, %Y' . "\n";
my @time   = localtime (time);
print strftime ($format, @time);
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