diff --git a/fhem/FHEM/23_LUXTRONIK2.pm b/fhem/FHEM/23_LUXTRONIK2.pm
index ab46612b4..4beb5d64b 100644
--- a/fhem/FHEM/23_LUXTRONIK2.pm
+++ b/fhem/FHEM/23_LUXTRONIK2.pm
@@ -1450,7 +1450,7 @@ LUXTRONIK2_doStatisticMinMax ($$$)
       $yearLast += 1900;
       $monthLast ++;
    }
-   ($dummy, $dummy, $dummy, $dayNow, $monthNow, $yearNow) = localtime;
+   ($dummy, $dummy, $dummy, $dayNow, $monthNow, $yearNow) = localtime ( gettimeofday() + $hash->{INTERVAL});
    $yearNow += 1900;
    $monthNow ++;
 
@@ -1568,7 +1568,7 @@ LUXTRONIK2_doStatisticDelta ($$$$$)
       $previousTariff = 0; 
       $showDate = 6;
    }
-   ($dummy, $dummy, $dummy, $dayNow, $monthNow, $yearNow) = localtime;
+   ($dummy, $dummy, $dummy, $dayNow, $monthNow, $yearNow) = localtime (gettimeofday() + $hash->{INTERVAL});
    if ($yearNow != $yearLast) { $periodSwitch = 3; }
    elsif ($monthNow != $monthLast) { $periodSwitch = 2; }
    elsif ($dayNow != $dayLast) { $periodSwitch = 1; }
diff --git a/fhem/FHEM/70_JSONMETER.pm b/fhem/FHEM/70_JSONMETER.pm
index d28e34586..1a73dedf1 100644
--- a/fhem/FHEM/70_JSONMETER.pm
+++ b/fhem/FHEM/70_JSONMETER.pm
@@ -660,7 +660,7 @@ JSONMETER_doStatisticMinMax ($$$)
       $yearLast += 1900;
       $monthLast ++;
    }
-   ($dummy, $dummy, $dummy, $dayNow, $monthNow, $yearNow) = localtime;
+   ($dummy, $dummy, $dummy, $dayNow, $monthNow, $yearNow) = localtime ( gettimeofday() + $hash->{INTERVAL});
    $yearNow += 1900;
    $monthNow ++;
 
@@ -756,7 +756,7 @@ JSONMETER_doStatisticDelta ($$$$$)
       $previousTariff = 0; 
       $showDate = 8;
    }
-   ($dummy, $dummy, $hourNow, $dayNow, $monthNow, $yearNow) = localtime;
+   ($dummy, $dummy, $hourNow, $dayNow, $monthNow, $yearNow) = localtime ( gettimeofday() + $hash->{INTERVAL});
 
    if ($yearNow != $yearLast) { $periodSwitch = 4; }
    elsif ($monthNow != $monthLast) { $periodSwitch = 3; }
diff --git a/fhem/FHEM/98_statistics.pm b/fhem/FHEM/98_statistics.pm
index 48408b4e0..0be874b76 100644
--- a/fhem/FHEM/98_statistics.pm
+++ b/fhem/FHEM/98_statistics.pm
@@ -689,7 +689,6 @@ statistics_doStatisticSpecialPeriod ($$$$$)
 {
    my ($hash, $dev, $readingName, $decPlaces, $value) = @_;
    my $name = $hash->{NAME};
-   my $result;
    
    my $specialPeriod = AttrVal($name, "specialDeltaPeriodHours", 0);
    
@@ -697,7 +696,9 @@ statistics_doStatisticSpecialPeriod ($$$$$)
 
    my $statReadingName = $hash->{PREFIX} . ucfirst($readingName) . "SpecialPeriod";
    my $hiddenReadingName = ".".$dev->{NAME} . ":" . $readingName . "SpecialPeriod";
-   my @hidden = split / /, ($value . " " . $hash->{READINGS}{$hiddenReadingName}{VAL}); # Internal values
+   my $result = $value;
+   if (exists ($hash->{READINGS}{$hiddenReadingName}{VAL})) { $result .= " " . $hash->{READINGS}{$hiddenReadingName}{VAL}; }
+   my @hidden = split / /, $result; # Internal values
    if ( exists($hidden[$specialPeriod]) ) { delete $hidden[$specialPeriod]; }
    
    foreach my $val (@hidden) { $result += $val; }