my ($dsec,$dmin,$dhour,$dday,$dmon,$dyear,$dwday)=(localtime)[0..6];
my $monname = ('Jan','Feb','Mar','Apr','May','Jun','Jul','Aug',
    'Sep','Oct','Nov','Dec')[$dmon];
my $dayname = ('Sun','Mon','Tue','Wed','Thu','Fri','Sat')[$dwday];
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Consult POSIX::strftime and your system's strftime manual page.