diff --git a/wres-vis/src/wres/vis/charts/ChartFactory.java b/wres-vis/src/wres/vis/charts/ChartFactory.java
index 87b0c3f2e..27ac05af0 100644
--- a/wres-vis/src/wres/vis/charts/ChartFactory.java
+++ b/wres-vis/src/wres/vis/charts/ChartFactory.java
@@ -552,6 +552,8 @@ public JFreeChart getDurationDiagramChart( List<DurationDiagramStatisticOuter> s
         format.setTimeZone( timeZone );
         dateAxis.setDateFormatOverride( format );
 
+        dateAxis.setTimeZone(timeZone);
+
         XYPlot plot = chart.getXYPlot();
 
         chart.setAntiAlias( true );
@@ -998,6 +1000,8 @@ else if ( chartType == ChartType.POOLING_WINDOW )
             SimpleDateFormat format = new SimpleDateFormat( "yyyy-MM-dd+HH" );
             format.setTimeZone( timeZone );
             dateAxis.setDateFormatOverride( format );
+
+            dateAxis.setTimeZone(timeZone);
         }
         else
         {