I came up with something like 
perl -MDate::Parse -MData::Dumper -n -le'chomp; s/:/ /; s/\// /g; s/\s
+\-\d+//; m/\[(.*?)\]/; print $1; $h{str2time($1)} = $_; END{ print $h
+{$_} for sort keys %h }' dates.log

[download]
where my test file, dates.log was: 
d 30/Mar/2002:00:03:44 -0500
b 22/Mar/2002:00:03:44 -0500
a 15/Mar/2002:00:03:44 -0500
c 24/Mar/2002:00:03:44 -0500
hope this helps.
--pizza
perl -MLWP::Simple -e'getprint "http://parseerror.com/p"' |less

In reply to Re: Sorting dates and times by pizza_milkshake
in thread Sorting dates and times by Anonymous Monk

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