diff --git a/rem2html/rem2html.in b/rem2html/rem2html.in
index 5fc3a108..ee7d908e 100644
--- a/rem2html/rem2html.in
+++ b/rem2html/rem2html.in
@@ -917,9 +917,9 @@ sub draw_day_cell
 	    $shade = "";
     }
     if ($class ne '') {
-	print "<td class=\"$class\"$shade>\n";
+	print "<td class=\"$class\"$shade><a id=\"d$day\"></a>\n";
     } else {
-	print "<td valign=\"top\" $shade>\n";
+	print "<td valign=\"top\" $shade><a id=\"d$day\"></a>\n";
     }
     if ($moons->[$day]) {
 	    my $phase = $moons->[$day]->{'phase'};