Here is mine Tk::Zinc version, with a little help from Advantages of Tk::Zinc over plain Canvas, Tk::Clock, -tk Moving circle, it works, but rotate is busted :) 
#!/usr/bin/perl --
use warnings;
use strict;
use Tk;
use Tk::Zinc ;
use Tk::Clock;

my $mw = tkinit;

my $canvas = $mw->Zinc(
    -width => 300,
    -height => 300,
    -backcolor => 'white',
)->pack(qw/
    -expand 1
    -fill both
    -padx 10
    -pady 10
/);

my $clock = $mw->Clock(  useAnalog   => 1, )->pack;

my $circle_radius = 100;
my $origin_x = $canvas->cget('-height') / 2 ;
my $origin_y = $canvas->cget('-width') / 2;
my $cgroup = $canvas->add('group',1,-visible=> 1);


#~ my $circle = $canvas->createOval(

my $innercircle = $canvas->add(
    'arc',
    $cgroup,
    [
        $origin_x - ( $circle_radius - 10 ),
        $origin_y - ( $circle_radius - 10 ),
        $origin_x + ( $circle_radius - 10 ),
        $origin_y + ( $circle_radius - 10 ),
    ],
);

my $circle = $canvas->add(
    'arc',
    $cgroup,
    [
        $origin_x - $circle_radius,
        $origin_y - $circle_radius,
        $origin_x + $circle_radius,
        $origin_y + $circle_radius,
    ],
);

my $ix=0;
my $PI=3.141592635;    
my $angle = -30;
for my $dtick ( 1 .. 12 ){
    my $d8 = 9;
    $angle += 30;
    my $cos = cos($angle*$PI/180);
    my $sin = sin($angle*$PI/180);
    
    my $x1 = $origin_x + ( ( $circle_radius - $d8  ) * $sin );
    my $y1 = $origin_y - ( ( $circle_radius - $d8  ) * $cos );
    my $x2 = $origin_x + ( ( $circle_radius + $d8  ) * $sin );
    my $y2 = $origin_y - ( ( $circle_radius + $d8  ) * $cos );

#~     my $line = $canvas->createLine (
    my $line = $canvas->add(
        'curve',
        $cgroup,
        [
            $x1, $y1,
            $x2, $y2,
        ],
        -tags  => "tick",
        -linecolor => 'red',
        -filled => 1,
        -linewidth => 1.0,
    );
    my $text = $canvas->add(
        'text', $cgroup,
        -position => [ $x1,$y1 ],
        -text => ixHour( $ix++) ,
        -color => 'blue',
    );

# no work, disappeared or crash
#~     $canvas->rotate( $text, $angle , 'degree' );
}


MainLoop;

sub ixHour {
    return [qw/
one two three four five six seven eight nine ten eleven twelve
    /]->[ -1 + shift ]
}

__END__

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In reply to Re^2: algorithm help -- how to label a clock by Anonymous Monk
in thread algorithm help -- how to label a clock by Anonymous Monk

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