diff --git a/bundles/org.openhab.binding.ihc/src/main/java/org/openhab/binding/ihc/internal/converters/DateTimeTypeWSDateValueConverter.java b/bundles/org.openhab.binding.ihc/src/main/java/org/openhab/binding/ihc/internal/converters/DateTimeTypeWSDateValueConverter.java
index 6b5866aff6e..17b25579ccb 100644
--- a/bundles/org.openhab.binding.ihc/src/main/java/org/openhab/binding/ihc/internal/converters/DateTimeTypeWSDateValueConverter.java
+++ b/bundles/org.openhab.binding.ihc/src/main/java/org/openhab/binding/ihc/internal/converters/DateTimeTypeWSDateValueConverter.java
@@ -12,10 +12,9 @@
  */
 package org.openhab.binding.ihc.internal.converters;
 
-import java.time.ZonedDateTime;
+import java.time.ZoneId;
 import java.util.Calendar;
 import java.util.GregorianCalendar;
-import java.util.TimeZone;
 
 import org.eclipse.jdt.annotation.NonNull;
 import org.openhab.binding.ihc.internal.ws.exeptions.ConversionException;
@@ -34,13 +33,13 @@ public class DateTimeTypeWSDateValueConverter implements Converter<WSDateValue,
     public DateTimeType convertFromResourceValue(@NonNull WSDateValue from,
             @NonNull ConverterAdditionalInfo convertData) throws ConversionException {
         Calendar cal = dateTimeToCalendar(from, null);
-        return new DateTimeType(ZonedDateTime.ofInstant(cal.toInstant(), TimeZone.getDefault().toZoneId()));
+        return new DateTimeType(cal.toInstant());
     }
 
     @Override
     public WSDateValue convertFromOHType(@NonNull DateTimeType from, @NonNull WSDateValue value,
             @NonNull ConverterAdditionalInfo convertData) throws ConversionException {
-        Calendar cal = GregorianCalendar.from(from.getZonedDateTime());
+        Calendar cal = GregorianCalendar.from(from.getZonedDateTime(ZoneId.systemDefault()));
         short year = (short) cal.get(Calendar.YEAR);
         byte month = (byte) (cal.get(Calendar.MONTH) + 1);
         byte day = (byte) cal.get(Calendar.DAY_OF_MONTH);
diff --git a/bundles/org.openhab.binding.ihc/src/main/java/org/openhab/binding/ihc/internal/converters/DateTimeTypeWSTimeValueConverter.java b/bundles/org.openhab.binding.ihc/src/main/java/org/openhab/binding/ihc/internal/converters/DateTimeTypeWSTimeValueConverter.java
index 92e156dde65..c57e810b1c8 100644
--- a/bundles/org.openhab.binding.ihc/src/main/java/org/openhab/binding/ihc/internal/converters/DateTimeTypeWSTimeValueConverter.java
+++ b/bundles/org.openhab.binding.ihc/src/main/java/org/openhab/binding/ihc/internal/converters/DateTimeTypeWSTimeValueConverter.java
@@ -12,10 +12,9 @@
  */
 package org.openhab.binding.ihc.internal.converters;
 
-import java.time.ZonedDateTime;
+import java.time.ZoneId;
 import java.util.Calendar;
 import java.util.GregorianCalendar;
-import java.util.TimeZone;
 
 import org.eclipse.jdt.annotation.NonNull;
 import org.openhab.binding.ihc.internal.ws.exeptions.ConversionException;
@@ -34,13 +33,13 @@ public class DateTimeTypeWSTimeValueConverter implements Converter<WSTimeValue,
     public DateTimeType convertFromResourceValue(@NonNull WSTimeValue from,
             @NonNull ConverterAdditionalInfo convertData) throws ConversionException {
         Calendar cal = dateTimeToCalendar(null, from);
-        return new DateTimeType(ZonedDateTime.ofInstant(cal.toInstant(), TimeZone.getDefault().toZoneId()));
+        return new DateTimeType(cal.toInstant());
     }
 
     @Override
     public WSTimeValue convertFromOHType(@NonNull DateTimeType from, @NonNull WSTimeValue value,
             @NonNull ConverterAdditionalInfo convertData) throws ConversionException {
-        Calendar cal = GregorianCalendar.from(from.getZonedDateTime());
+        Calendar cal = GregorianCalendar.from(from.getZonedDateTime(ZoneId.systemDefault()));
         return new WSTimeValue(value.resourceID, cal.get(Calendar.HOUR_OF_DAY), cal.get(Calendar.MINUTE),
                 cal.get(Calendar.SECOND));
     }
diff --git a/bundles/org.openhab.binding.ihc/src/main/java/org/openhab/binding/ihc/internal/handler/IhcHandler.java b/bundles/org.openhab.binding.ihc/src/main/java/org/openhab/binding/ihc/internal/handler/IhcHandler.java
index dc79ecd2090..1eeadf9c2fa 100644
--- a/bundles/org.openhab.binding.ihc/src/main/java/org/openhab/binding/ihc/internal/handler/IhcHandler.java
+++ b/bundles/org.openhab.binding.ihc/src/main/java/org/openhab/binding/ihc/internal/handler/IhcHandler.java
@@ -17,9 +17,9 @@ import static org.openhab.binding.ihc.internal.IhcBindingConstants.*;
 import java.io.File;
 import java.math.BigDecimal;
 import java.time.Duration;
+import java.time.Instant;
 import java.time.LocalDateTime;
 import java.time.ZoneId;
-import java.time.ZonedDateTime;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.HashMap;
@@ -343,8 +343,8 @@ public class IhcHandler extends BaseThingHandler implements IhcEventListener {
             WSTimeManagerSettings timeSettings = ihc.getTimeSettings();
             logger.debug("Controller time settings: {}", timeSettings);
 
-            ZonedDateTime time = timeSettings.getTimeAndDateInUTC().getAsZonedDateTime(ZoneId.of("Z"))
-                    .withZoneSameInstant(ZoneId.systemDefault());
+            Instant time = timeSettings.getTimeAndDateInUTC().getAsInstant(ZoneId.of("Z"));
+
             updateState(new ChannelUID(getThing().getUID(), CHANNEL_CONTROLLER_TIME), new DateTimeType(time));
         } catch (IhcExecption e) {
             logger.warn("Controller uptime information fetch failed, reason: {}.", e.getMessage(), e);
diff --git a/bundles/org.openhab.binding.ihc/src/main/java/org/openhab/binding/ihc/internal/ws/datatypes/WSDate.java b/bundles/org.openhab.binding.ihc/src/main/java/org/openhab/binding/ihc/internal/ws/datatypes/WSDate.java
index a8ea117dcf8..3c7cd832b3b 100644
--- a/bundles/org.openhab.binding.ihc/src/main/java/org/openhab/binding/ihc/internal/ws/datatypes/WSDate.java
+++ b/bundles/org.openhab.binding.ihc/src/main/java/org/openhab/binding/ihc/internal/ws/datatypes/WSDate.java
@@ -12,9 +12,9 @@
  */
 package org.openhab.binding.ihc.internal.ws.datatypes;
 
+import java.time.Instant;
 import java.time.LocalDateTime;
 import java.time.ZoneId;
-import java.time.ZonedDateTime;
 
 /**
  * Class for WSDate complex type.
@@ -159,11 +159,11 @@ public class WSDate {
     }
 
     /**
-     * Gets WSDate as ZonedDateTime.
+     * Gets WSDate as {@link Instant}.
      *
-     * @return LocalDateTime
+     * @return Instant
      */
-    public ZonedDateTime getAsZonedDateTime(ZoneId zoneId) {
-        return ZonedDateTime.of(getAsLocalDateTime(), zoneId);
+    public Instant getAsInstant(ZoneId zoneId) {
+        return getAsLocalDateTime().atZone(zoneId).toInstant();
     }
 }