2 files changed, 26 insertions, 10 deletions
diff --git a/src/main/java/org/traccar/reports/SummaryReportProvider.java b/src/main/java/org/traccar/reports/SummaryReportProvider.java
index 5f155552b..5bd7e51b3 100644
--- a/src/main/java/org/traccar/reports/SummaryReportProvider.java
+++ b/src/main/java/org/traccar/reports/SummaryReportProvider.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2016 - 2023 Anton Tananaev (anton@traccar.org)
+ * Copyright 2016 - 2024 Anton Tananaev (anton@traccar.org)
  * Copyright 2016 Andrey Kunitsyn (andrey@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -106,9 +106,10 @@ public class SummaryReportProvider {
             result.setSpentFuel(reportUtils.calculateFuel(first, last));
 
             if (first.hasAttribute(Position.KEY_HOURS) && last.hasAttribute(Position.KEY_HOURS)) {
-                long durationMilliseconds = last.getLong(Position.KEY_HOURS) - first.getLong(Position.KEY_HOURS);
-                result.setEngineHours(durationMilliseconds);
-                result.setAverageSpeed(UnitsConverter.knotsFromMps(result.getDistance() * 1000 / durationMilliseconds));
+                result.setStartHours(first.getLong(Position.KEY_HOURS));
+                result.setEndHours(last.getLong(Position.KEY_HOURS));
+                result.setAverageSpeed(UnitsConverter.knotsFromMps(
+                        result.getDistance() * 1000 / result.getEngineHours()));
             }
 
             if (!ignoreOdometer
diff --git a/src/main/java/org/traccar/reports/model/SummaryReportItem.java b/src/main/java/org/traccar/reports/model/SummaryReportItem.java
index 44a15cf1d..b88cabe49 100644
--- a/src/main/java/org/traccar/reports/model/SummaryReportItem.java
+++ b/src/main/java/org/traccar/reports/model/SummaryReportItem.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2016 - 2020 Anton Tananaev (anton@traccar.org)
+ * Copyright 2016 - 2024 Anton Tananaev (anton@traccar.org)
  * Copyright 2016 - 2017 Andrey Kunitsyn (andrey@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -18,13 +18,28 @@ package org.traccar.reports.model;
 
 public class SummaryReportItem extends BaseReportItem {
 
-    private long engineHours; // milliseconds
-
     public long getEngineHours() {
-        return engineHours;
+        return endHours - startHours;
+    }
+
+    private long startHours; // milliseconds
+
+    public long getStartHours() {
+        return startHours;
+    }
+
+    public void setStartHours(long startHours) {
+        this.startHours = startHours;
     }
 
-    public void setEngineHours(long engineHours) {
-        this.engineHours = engineHours;
+    private long endHours; // milliseconds
+
+    public long getEndHours() {
+        return endHours;
     }
+
+    public void setEndHours(long endHours) {
+        this.endHours = endHours;
+    }
+
 }