diff --git a/modules/basics/src/main/java/com/opengamma/strata/basics/date/GlobalHolidayCalendars.java b/modules/basics/src/main/java/com/opengamma/strata/basics/date/GlobalHolidayCalendars.java
index 436954f163..181ad9d389 100644
--- a/modules/basics/src/main/java/com/opengamma/strata/basics/date/GlobalHolidayCalendars.java
+++ b/modules/basics/src/main/java/com/opengamma/strata/basics/date/GlobalHolidayCalendars.java
@@ -337,7 +337,7 @@ private static void usCommon(
     }
     // juneteenth (seems like it wasn't widely applied in 2021)
     if (year >= 2022) {
-      holidays.add(bumpToFriOrMon(date(year, 6, 19)));
+      holidays.add(bumpBack ? bumpToFriOrMon(date(year, 6, 19)) : bumpSunToMon(date(year, 6, 19)));
     }
     // labor day
     holidays.add(date(year, 9, 1).with(firstInMonth(MONDAY)));
diff --git a/modules/basics/src/test/java/com/opengamma/strata/basics/date/GlobalHolidayCalendarsTest.java b/modules/basics/src/test/java/com/opengamma/strata/basics/date/GlobalHolidayCalendarsTest.java
index ab72db08fc..9b4f748b63 100644
--- a/modules/basics/src/test/java/com/opengamma/strata/basics/date/GlobalHolidayCalendarsTest.java
+++ b/modules/basics/src/test/java/com/opengamma/strata/basics/date/GlobalHolidayCalendarsTest.java
@@ -623,6 +623,15 @@ public void test_nyse(int year, List<LocalDate> holidays) {
     }
   }
 
+  @Test
+  public void test_usJuneteenthSaturdayObservance() {
+    LocalDate observedDate = LocalDate.of(2027, 6, 18);
+    assertThat(USGS.isHoliday(observedDate)).isTrue();
+    assertThat(NYSE.isHoliday(observedDate)).isTrue();
+    assertThat(USNY.isHoliday(observedDate)).isFalse();
+    assertThat(NYFD.isHoliday(observedDate)).isFalse();
+  }
+
   //-------------------------------------------------------------------------
   private static final HolidayCalendar JPTO = GlobalHolidayCalendars.generateTokyo();