diff --git a/bundles/org.openhab.core.io.rest.core/src/main/java/org/openhab/core/io/rest/core/internal/persistence/PersistenceResource.java b/bundles/org.openhab.core.io.rest.core/src/main/java/org/openhab/core/io/rest/core/internal/persistence/PersistenceResource.java
index 66a0578f2d6..aeb8e3ea7db 100644
--- a/bundles/org.openhab.core.io.rest.core/src/main/java/org/openhab/core/io/rest/core/internal/persistence/PersistenceResource.java
+++ b/bundles/org.openhab.core.io.rest.core/src/main/java/org/openhab/core/io/rest/core/internal/persistence/PersistenceResource.java
@@ -449,7 +449,7 @@ private Response getItemHistoryDTO(@Nullable String serviceId, String itemName,
         while (it.hasNext()) {
             HistoricItem historicItem = it.next();
             State state = historicItem.getState();
-            long timestamp = historicItem.getTimestamp().toInstant().toEpochMilli();
+            long timestamp = historicItem.getInstant().toEpochMilli();
 
             // For 'binary' states, we need to replicate the data
             // to avoid diagonal lines
diff --git a/bundles/org.openhab.core.persistence/src/main/java/org/openhab/core/persistence/HistoricItem.java b/bundles/org.openhab.core.persistence/src/main/java/org/openhab/core/persistence/HistoricItem.java
index ff1ea858488..f61c2cc4b7b 100644
--- a/bundles/org.openhab.core.persistence/src/main/java/org/openhab/core/persistence/HistoricItem.java
+++ b/bundles/org.openhab.core.persistence/src/main/java/org/openhab/core/persistence/HistoricItem.java
@@ -12,6 +12,7 @@
  */
 package org.openhab.core.persistence;
 
+import java.time.Instant;
 import java.time.ZonedDateTime;
 
 import org.eclipse.jdt.annotation.NonNullByDefault;
@@ -38,6 +39,15 @@ public interface HistoricItem {
      */
     ZonedDateTime getTimestamp();
 
+    /**
+     * returns the timestamp of the persisted item
+     *
+     * @return the timestamp of the item
+     */
+    default Instant getInstant() {
+        return getTimestamp().toInstant();
+    }
+
     /**
      * returns the current state of the item
      *
diff --git a/bundles/org.openhab.core.persistence/src/main/java/org/openhab/core/persistence/internal/PersistenceManagerImpl.java b/bundles/org.openhab.core.persistence/src/main/java/org/openhab/core/persistence/internal/PersistenceManagerImpl.java
index e09678b3224..fe507de8982 100644
--- a/bundles/org.openhab.core.persistence/src/main/java/org/openhab/core/persistence/internal/PersistenceManagerImpl.java
+++ b/bundles/org.openhab.core.persistence/src/main/java/org/openhab/core/persistence/internal/PersistenceManagerImpl.java
@@ -577,8 +577,9 @@ public void scheduleNextPersistedForecastForItem(String itemName) {
                         .build().query(filter).iterator();
                 while (result.hasNext()) {
                     HistoricItem next = result.next();
-                    if (next.getTimestamp().isAfter(ZonedDateTime.now())) {
-                        scheduleNextForecastForItem(itemName, next.getTimestamp().toInstant(), next.getState());
+                    Instant timestamp = next.getInstant();
+                    if (timestamp.isAfter(Instant.now())) {
+                        scheduleNextForecastForItem(itemName, timestamp, next.getState());
                         break;
                     }
                 }
diff --git a/bundles/org.openhab.core.ui/src/main/java/org/openhab/core/ui/internal/chart/defaultchartprovider/DefaultChartProvider.java b/bundles/org.openhab.core.ui/src/main/java/org/openhab/core/ui/internal/chart/defaultchartprovider/DefaultChartProvider.java
index 98d97287c43..09abb6f7718 100644
--- a/bundles/org.openhab.core.ui/src/main/java/org/openhab/core/ui/internal/chart/defaultchartprovider/DefaultChartProvider.java
+++ b/bundles/org.openhab.core.ui/src/main/java/org/openhab/core/ui/internal/chart/defaultchartprovider/DefaultChartProvider.java
@@ -359,12 +359,12 @@ private boolean addItem(XYChart chart, QueryablePersistenceService service, Zone
             // For 'binary' states, we need to replicate the data
             // to avoid diagonal lines
             if (state instanceof OnOffType || state instanceof OpenClosedType) {
-                xData.add(Date.from(historicItem.getTimestamp().toInstant().minus(1, ChronoUnit.MILLIS)));
+                xData.add(Date.from(historicItem.getInstant().minus(1, ChronoUnit.MILLIS)));
                 yData.add(convertData(state));
             }
 
             state = historicItem.getState();
-            xData.add(Date.from(historicItem.getTimestamp().toInstant()));
+            xData.add(Date.from(historicItem.getInstant()));
             yData.add(convertData(state));
         }