From 5aa206878d491c5b6e954c6e63abb26fbfd5ffbd Mon Sep 17 00:00:00 2001
From: rudolfkoenig <>
Date: Mon, 1 Nov 2021 10:07:38 +0000
Subject: [PATCH] 95_holiday.pm: Fix clock change issues for tomorrow et al
 (Forum #123808)

git-svn-id: https://svn.fhem.de/fhem/trunk/fhem@25164 2b470e98-0d58-463d-a4d8-8e2adae1ed80
---
 FHEM/95_holiday.pm | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/FHEM/95_holiday.pm b/FHEM/95_holiday.pm
index c0373d4e8..8fc613115 100644
--- a/FHEM/95_holiday.pm
+++ b/FHEM/95_holiday.pm
@@ -307,8 +307,17 @@ holiday_Get($@)
 
   } elsif($a[1] =~ m/^(yesterday|today|tomorrow)$/) {
     my $t = time();
-    $t += 86400 if($a[1] eq "tomorrow");
-    $t -= 86400 if($a[1] eq "yesterday");
+
+    if($a[1] =~ m/^(yesterday|tomorrow)$/) { # clock change issues, #123808
+      my $inc = ($a[1] eq "tomorrow" ? 3600 : -3600);
+      my @now = localtime($t);
+      for(;;) {
+        $t += $inc;
+        my @then = localtime($t);
+        last if($then[3] != $now[3]);
+      }
+    }
+
     my @a = localtime($t);
     $arg = sprintf("%04d-%02d-%02d", $a[5]+1900, $a[4]+1, $a[3]);