Index: src/wp-admin/includes/template.php
===================================================================
--- src/wp-admin/includes/template.php	(revision 31848)
+++ src/wp-admin/includes/template.php	(working copy)
@@ -773,7 +773,9 @@
 	$cur_hh = gmdate( 'H', $time_adj );
 	$cur_mn = gmdate( 'i', $time_adj );
 
-	$month = '<label for="mm" class="screen-reader-text">' . __( 'Month' ) . '</label><select ' . ( $multi ? '' : 'id="mm" ' ) . 'name="mm"' . $tab_index_attribute . ">\n";
+	$unique_id = ( $multi ? '-' . $post->ID  : '' );
+
+	$month = '<label for="mm' . $unique_id . '" class="screen-reader-text">' . __( 'Month' ) . '</label><select id="mm' . $unique_id . '" name="mm"' . $tab_index_attribute . ">\n";
 	for ( $i = 1; $i < 13; $i = $i +1 ) {
 		$monthnum = zeroise($i, 2);
 		$month .= "\t\t\t" . '<option value="' . $monthnum . '" ' . selected( $monthnum, $mm, false ) . '>';
@@ -782,10 +784,10 @@
 	}
 	$month .= '</select>';
 
-	$day = '<label for="jj" class="screen-reader-text">' . __( 'Day' ) . '</label><input type="text" ' . ( $multi ? '' : 'id="jj" ' ) . 'name="jj" value="' . $jj . '" size="2" maxlength="2"' . $tab_index_attribute . ' autocomplete="off" />';
-	$year = '<label for="aa" class="screen-reader-text">' . __( 'Year' ) . '</label><input type="text" ' . ( $multi ? '' : 'id="aa" ' ) . 'name="aa" value="' . $aa . '" size="4" maxlength="4"' . $tab_index_attribute . ' autocomplete="off" />';
-	$hour = '<label for="hh" class="screen-reader-text">' . __( 'Hour' ) . '</label><input type="text" ' . ( $multi ? '' : 'id="hh" ' ) . 'name="hh" value="' . $hh . '" size="2" maxlength="2"' . $tab_index_attribute . ' autocomplete="off" />';
-	$minute = '<label for="mn" class="screen-reader-text">' . __( 'Minute' ) . '</label><input type="text" ' . ( $multi ? '' : 'id="mn" ' ) . 'name="mn" value="' . $mn . '" size="2" maxlength="2"' . $tab_index_attribute . ' autocomplete="off" />';
+	$day = '<label for="jj' . $unique_id . '" class="screen-reader-text">' . __( 'Day' ) . '</label><input type="text" id="jj' . $unique_id . '" name="jj" value="' . $jj . '" size="2" maxlength="2"' . $tab_index_attribute . ' autocomplete="off" />';
+	$year = '<label for="aa' . $unique_id . '" class="screen-reader-text">' . __( 'Year' ) . '</label><input type="text" id="aa' . $unique_id . '" name="aa" value="' . $aa . '" size="4" maxlength="4"' . $tab_index_attribute . ' autocomplete="off" />';
+	$hour = '<label for="hh' . $unique_id . '" class="screen-reader-text">' . __( 'Hour' ) . '</label><input type="text" id="hh' . $unique_id . '" name="hh" value="' . $hh . '" size="2" maxlength="2"' . $tab_index_attribute . ' autocomplete="off" />';
+	$minute = '<label for="mn' . $unique_id . '" class="screen-reader-text">' . __( 'Minute' ) . '</label><input type="text"  id="mn' . $unique_id . '" name="mn" value="' . $mn . '" size="2" maxlength="2"' . $tab_index_attribute . ' autocomplete="off" />';
 
 	echo '<div class="timestamp-wrap">';
 	/* translators: 1: month, 2: day, 3: year, 4: hour, 5: minute */