Pastoid

<?p-code 
if ( $posts) {
	$first = true; $lastdate = '';
	foreach ($posts as $post) {
		$thisdate = $post->date; // only want the date, not the time!
		if ( $lastdate != $thisdate AND !$first ) {  // end the existing div 		?>
			</div> <?p-code
		}
		if ($first OR $lastdate != $thisdate) { // need a new div 			?>
			<div class="date"><?p-code
			$first = false;
		} else {
			// do nothing, you don't need to do anything if the date matches
		}
 
	// display your post meta
	// display your post
 
} else {
	// no posts
} ?>