date adds a "\n" at the end of its outout

my $yr = `date -u +%Y`; #get the output of year 
my $mm = `date -u +%m`; #get the output of month 
my $dd = `date -u +%d`; #get the output of day 
chomp $yr;
chomp $mm;
chomp $dd;
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hint:
perldoc -f localtime