Index: index.php
===================================================================
--- index.php	(Revision 9422)
+++ index.php	(Arbeitskopie)
@@ -84,10 +84,17 @@
 if ($config['load_birthdays'] && $config['allow_birthdays'])
 {
 	$now = getdate(time() + $user->timezone + $user->dst - date('Z'));
+	// Display birthdays of 29th february on 28th february in non-leap-years
+	$leap_year_birthdays = '';
+	if (($now['mday'] == 28) && ($now['mon'] == 2) && !(($now['year'] % 400) == 0 || (($now['year'] % 4) == 0 && ($now['year'] % 100) != 0)))
+	{
+		$leap_year_birthdays = "user_birthday LIKE '" . $db->sql_escape(sprintf('%2d-%2d-', 29, 2)) . "%'";
+	}
 	$sql = 'SELECT user_id, username, user_colour, user_birthday
 		FROM ' . USERS_TABLE . "
 		WHERE user_birthday LIKE '" . $db->sql_escape(sprintf('%2d-%2d-', $now['mday'], $now['mon'])) . "%'
-			AND user_type IN (" . USER_NORMAL . ', ' . USER_FOUNDER . ')';
+			" . (($leap_year_birthdays) ? " AND $leap_year_birthdays " : '') . '
+			AND user_type IN (' . USER_NORMAL . ', ' . USER_FOUNDER . ')';
 	$result = $db->sql_query($sql);
 
 	while ($row = $db->sql_fetchrow($result))