diff --git a/Plot/src/test/java/io/deephaven/plot/axistransformations/CalendarInit.java b/Plot/src/test/java/io/deephaven/plot/axistransformations/CalendarInit.java
new file mode 100644
index 00000000000..ebdde9a5891
--- /dev/null
+++ b/Plot/src/test/java/io/deephaven/plot/axistransformations/CalendarInit.java
@@ -0,0 +1,19 @@
+/**
+ * Copyright (c) 2016-2023 Deephaven Data Labs and Patent Pending
+ */
+package io.deephaven.plot.axistransformations;
+
+import io.deephaven.time.calendar.BusinessCalendar;
+import io.deephaven.time.calendar.Calendars;
+
+final class CalendarInit {
+    static {
+        for (BusinessCalendar calendar : Calendars.calendarsFromConfiguration()) {
+            Calendars.addCalendar(calendar);
+        }
+    }
+
+    static void noop() {
+
+    }
+}
diff --git a/Plot/src/test/java/io/deephaven/plot/axistransformations/TestAxisTransformBusinessCalendar.java b/Plot/src/test/java/io/deephaven/plot/axistransformations/TestAxisTransformBusinessCalendar.java
index c4fb45c357f..9aac997fc67 100644
--- a/Plot/src/test/java/io/deephaven/plot/axistransformations/TestAxisTransformBusinessCalendar.java
+++ b/Plot/src/test/java/io/deephaven/plot/axistransformations/TestAxisTransformBusinessCalendar.java
@@ -3,22 +3,18 @@
  */
 package io.deephaven.plot.axistransformations;
 
-import io.deephaven.base.testing.BaseArrayTestCase;
 import io.deephaven.time.DateTimeUtils;
-import io.deephaven.time.calendar.BusinessCalendar;
 import io.deephaven.time.calendar.Calendars;
+import junit.framework.TestCase;
 
 import java.nio.file.Paths;
 import java.time.Instant;
 import java.time.ZoneId;
 import java.util.Objects;
 
-public class TestAxisTransformBusinessCalendar extends BaseArrayTestCase {
-
+public class TestAxisTransformBusinessCalendar extends TestCase {
     static {
-        for (BusinessCalendar calendar : Calendars.calendarsFromConfiguration()) {
-            Calendars.addCalendar(calendar);
-        }
+        CalendarInit.noop();
     }
 
     private static final ZoneId TZ_JP = ZoneId.of("Asia/Tokyo");
diff --git a/Plot/src/test/java/io/deephaven/plot/axistransformations/TestAxisTransforms.java b/Plot/src/test/java/io/deephaven/plot/axistransformations/TestAxisTransforms.java
index bbec805b493..8e676e96af5 100644
--- a/Plot/src/test/java/io/deephaven/plot/axistransformations/TestAxisTransforms.java
+++ b/Plot/src/test/java/io/deephaven/plot/axistransformations/TestAxisTransforms.java
@@ -16,11 +16,8 @@
 import static org.junit.Assert.assertTrue;
 
 public class TestAxisTransforms {
-
     static {
-        for (BusinessCalendar calendar : Calendars.calendarsFromConfiguration()) {
-            Calendars.addCalendar(calendar);
-        }
+        CalendarInit.noop();
     }
 
     final double d1 = 3.5;
diff --git a/engine/time/src/test/java/io/deephaven/time/calendar/CalendarInit.java b/engine/time/src/test/java/io/deephaven/time/calendar/CalendarInit.java
new file mode 100644
index 00000000000..4632150154b
--- /dev/null
+++ b/engine/time/src/test/java/io/deephaven/time/calendar/CalendarInit.java
@@ -0,0 +1,17 @@
+/**
+ * Copyright (c) 2016-2023 Deephaven Data Labs and Patent Pending
+ */
+package io.deephaven.time.calendar;
+
+final class CalendarInit {
+
+    static {
+        for (BusinessCalendar calendar : Calendars.calendarsFromConfiguration()) {
+            Calendars.addCalendar(calendar);
+        }
+    }
+
+    static void noop() {
+
+    }
+}
diff --git a/engine/time/src/test/java/io/deephaven/time/calendar/TestCalendars.java b/engine/time/src/test/java/io/deephaven/time/calendar/TestCalendars.java
index 2faf5570248..e76e3cbbb0a 100644
--- a/engine/time/src/test/java/io/deephaven/time/calendar/TestCalendars.java
+++ b/engine/time/src/test/java/io/deephaven/time/calendar/TestCalendars.java
@@ -13,9 +13,7 @@
 public class TestCalendars extends BaseArrayTestCase {
 
     static {
-        for (BusinessCalendar calendar : Calendars.calendarsFromConfiguration()) {
-            Calendars.addCalendar(calendar);
-        }
+        CalendarInit.noop();
     }
 
     public void testDefault() {
diff --git a/engine/time/src/test/java/io/deephaven/time/calendar/TestStaticCalendarMethods.java b/engine/time/src/test/java/io/deephaven/time/calendar/TestStaticCalendarMethods.java
index b50b26bd62f..684b643edd4 100644
--- a/engine/time/src/test/java/io/deephaven/time/calendar/TestStaticCalendarMethods.java
+++ b/engine/time/src/test/java/io/deephaven/time/calendar/TestStaticCalendarMethods.java
@@ -23,9 +23,7 @@
 public class TestStaticCalendarMethods extends BaseArrayTestCase {
 
     static {
-        for (BusinessCalendar calendar : Calendars.calendarsFromConfiguration()) {
-            Calendars.addCalendar(calendar);
-        }
+        CalendarInit.noop();
     }
 
     private final Map<Class<?>, Object[]> data = new HashMap<>();