Date Time Php

/*
* PHP Clock
*/
Header("Content-type: image/gif");
Header("Expires: ".GMDate("D, d M Y H:i:s")." GMT");
$th = ((Date(U) % 43200)+3600) / (4320/2*PI());
$tm = Date(U) % 3600 / (360 /2*PI());
$ts = Date(U) % 60 / (6 /2*PI());
$sirka = 100; // width
$vyska = 100; // height
$stredx = $sirka/2; //center x
$stredy = $vyska/2; //center y
$r = min($sirka, $vyska)/2-(min($sirka, $vyska)/10);
$img = ImageCreate($sirka,$vyska);
$color = ImageColorAllocate($img, 58, 110, 165);
ImageFill ($img, 0, 0, $color);
$color = ImageColorAllocate($img, 255, 255, 255);
$hx = $stredx + $r*0.60 * sin($th);
$hy = $stredy - $r*0.60 * cos($th);
$mx = $stredx + $r * sin($tm);
$my = $stredy - $r * cos($tm);
$sx = $stredx + $r * sin($ts);
$sy = $stredy - $r * cos($ts);
$colorcopy = ImageColorAllocate($img, 102, 153, 204);
$colorcopy2= ImageColorAllocate($img, 163, 193, 224);
ImageString ($img, 2, 5, 5, Date("H:i:s"), $colorcopy);
for($i=0; $i<12; $i++)
{
$bod = $i / (1.2/2*PI());
$bodx = $stredx + ($r*1.0) * sin($bod);
$body = $stredy - ($r*1.0) * cos($bod);
Imagesetpixel($img, $bodx, $body, $color);
}
ImageLine($img, $stredx-2, $stredy, $hx-2, $hy, $colorcopy);
ImageLine($img, $stredx+2, $stredy, $hx+2, $hy, $colorcopy);
ImageLine($img, $stredx-1, $stredy, $hx-1, $hy, $colorcopy2);
ImageLine($img, $stredx , $stredy, $hx , $hy, $color);
ImageLine($img, $stredx+1, $stredy, $hx+1, $hy, $colorcopy2);
ImageLine($img, $stredx-1, $stredy, $mx-1, $my, $colorcopy);
ImageLine($img, $stredx+1, $stredy, $mx+1, $my, $colorcopy);
ImageLine($img, $stredx, $stredy, $mx, $my, $color);
ImageLine($img, $stredx, $stredy, $sx, $sy, $color);
ImageGif($img);
?>