diff --git a/hibernate-core/src/test/java/org/hibernate/orm/test/timezones/AutoZonedTest.java b/hibernate-core/src/test/java/org/hibernate/orm/test/timezones/AutoZonedTest.java
index 421fd7deb3..a48d402ead 100644
--- a/hibernate-core/src/test/java/org/hibernate/orm/test/timezones/AutoZonedTest.java
+++ b/hibernate-core/src/test/java/org/hibernate/orm/test/timezones/AutoZonedTest.java
@@ -1,5 +1,6 @@
 package org.hibernate.orm.test.timezones;
 
+import java.time.Instant;
 import java.time.OffsetDateTime;
 import java.time.ZoneId;
 import java.time.ZoneOffset;
@@ -53,13 +54,17 @@ public class AutoZonedTest {
 		scope.inSession( s -> {
 			Zoned z = s.find(Zoned.class, id);
 			final Dialect dialect = scope.getSessionFactory().getJdbcServices().getDialect();
+			Instant expected = DateTimeUtils.adjustToDefaultPrecision( nowZoned.toInstant(), dialect );
+			Instant actual = DateTimeUtils.adjustToDefaultPrecision( z.zonedDateTime.toInstant(), dialect );
 			assertEquals(
-					DateTimeUtils.roundToDefaultPrecision( nowZoned.toInstant(), dialect ),
-					DateTimeUtils.roundToDefaultPrecision( z.zonedDateTime.toInstant(), dialect )
+					expected,
+					actual
 			);
+			expected = DateTimeUtils.adjustToDefaultPrecision( nowOffset.toInstant(), dialect );
+			actual = DateTimeUtils.adjustToDefaultPrecision( z.offsetDateTime.toInstant(), dialect );
 			assertEquals(
-					DateTimeUtils.roundToDefaultPrecision( nowOffset.toInstant(), dialect ),
-					DateTimeUtils.roundToDefaultPrecision( z.offsetDateTime.toInstant(), dialect )
+					expected,
+					actual
 			);
 			assertEquals( nowZoned.toOffsetDateTime().getOffset(), z.zonedDateTime.toOffsetDateTime().getOffset() );
 			assertEquals( nowOffset.getOffset(), z.offsetDateTime.getOffset() );
diff --git a/hibernate-core/src/test/java/org/hibernate/orm/test/timezones/ColumnZonedTest.java b/hibernate-core/src/test/java/org/hibernate/orm/test/timezones/ColumnZonedTest.java
index dbbcb3a62e..40336db540 100644
--- a/hibernate-core/src/test/java/org/hibernate/orm/test/timezones/ColumnZonedTest.java
+++ b/hibernate-core/src/test/java/org/hibernate/orm/test/timezones/ColumnZonedTest.java
@@ -1,5 +1,6 @@
 package org.hibernate.orm.test.timezones;
 
+import java.time.Instant;
 import java.time.OffsetDateTime;
 import java.time.ZoneId;
 import java.time.ZoneOffset;
@@ -53,13 +54,17 @@ public class ColumnZonedTest {
 		scope.inSession( s -> {
 			Zoned z = s.find(Zoned.class, id);
 			final Dialect dialect = scope.getSessionFactory().getJdbcServices().getDialect();
+			Instant expected = DateTimeUtils.adjustToDefaultPrecision( nowZoned.toInstant(), dialect );
+			Instant actual = DateTimeUtils.adjustToDefaultPrecision( z.zonedDateTime.toInstant(), dialect );
 			assertEquals(
-					DateTimeUtils.roundToDefaultPrecision( nowZoned.toInstant(), dialect ),
-					DateTimeUtils.roundToDefaultPrecision( z.zonedDateTime.toInstant(), dialect )
+					expected,
+					actual
 			);
+			expected = DateTimeUtils.adjustToDefaultPrecision( nowOffset.toInstant(), dialect );
+			actual = DateTimeUtils.adjustToDefaultPrecision( z.offsetDateTime.toInstant(), dialect );
 			assertEquals(
-					DateTimeUtils.roundToDefaultPrecision( nowOffset.toInstant(), dialect ),
-					DateTimeUtils.roundToDefaultPrecision( z.offsetDateTime.toInstant(), dialect )
+					expected,
+					actual
 			);
 			assertEquals( nowZoned.toOffsetDateTime().getOffset(), z.zonedDateTime.toOffsetDateTime().getOffset() );
 			assertEquals( nowOffset.getOffset(), z.offsetDateTime.getOffset() );
diff --git a/hibernate-core/src/test/java/org/hibernate/orm/test/timezones/DefaultZonedTest.java b/hibernate-core/src/test/java/org/hibernate/orm/test/timezones/DefaultZonedTest.java
index 0bb8a1f3b2..88a4123162 100644
--- a/hibernate-core/src/test/java/org/hibernate/orm/test/timezones/DefaultZonedTest.java
+++ b/hibernate-core/src/test/java/org/hibernate/orm/test/timezones/DefaultZonedTest.java
@@ -1,5 +1,6 @@
 package org.hibernate.orm.test.timezones;
 
+import java.time.Instant;
 import java.time.OffsetDateTime;
 import java.time.ZoneId;
 import java.time.ZoneOffset;
@@ -50,13 +51,17 @@ public class DefaultZonedTest {
 		scope.inSession( s -> {
 			Zoned z = s.find(Zoned.class, id);
 			final Dialect dialect = scope.getSessionFactory().getJdbcServices().getDialect();
+			Instant expected = DateTimeUtils.adjustToDefaultPrecision( nowZoned.toInstant(), dialect );
+			Instant actual = DateTimeUtils.adjustToDefaultPrecision( z.zonedDateTime.toInstant(), dialect );
 			assertEquals(
-					DateTimeUtils.roundToDefaultPrecision( nowZoned.toInstant(), dialect ),
-					DateTimeUtils.roundToDefaultPrecision( z.zonedDateTime.toInstant(), dialect )
+					expected,
+					actual
 			);
+			expected = DateTimeUtils.adjustToDefaultPrecision( nowOffset.toInstant(), dialect );
+			actual = DateTimeUtils.adjustToDefaultPrecision( z.offsetDateTime.toInstant(), dialect );
 			assertEquals(
-					DateTimeUtils.roundToDefaultPrecision( nowOffset.toInstant(), dialect ),
-					DateTimeUtils.roundToDefaultPrecision( z.offsetDateTime.toInstant(), dialect )
+					expected,
+					actual
 			);
 			if ( dialect.getTimeZoneSupport() == TimeZoneSupport.NATIVE ) {
 				assertEquals( nowZoned.toOffsetDateTime().getOffset(), z.zonedDateTime.toOffsetDateTime().getOffset() );
diff --git a/hibernate-core/src/test/java/org/hibernate/orm/test/timezones/JDBCTimeZoneZonedTest.java b/hibernate-core/src/test/java/org/hibernate/orm/test/timezones/JDBCTimeZoneZonedTest.java
index f77bc9ced6..7e8c82913e 100644
--- a/hibernate-core/src/test/java/org/hibernate/orm/test/timezones/JDBCTimeZoneZonedTest.java
+++ b/hibernate-core/src/test/java/org/hibernate/orm/test/timezones/JDBCTimeZoneZonedTest.java
@@ -57,13 +57,17 @@ public class JDBCTimeZoneZonedTest {
 			ZoneId systemZone = ZoneId.systemDefault();
 			ZoneOffset systemOffset = systemZone.getRules().getOffset( Instant.now() );
 			final Dialect dialect = scope.getSessionFactory().getJdbcServices().getDialect();
+			Instant expected = DateTimeUtils.adjustToDefaultPrecision( nowZoned.toInstant(), dialect );
+			Instant actual = DateTimeUtils.adjustToDefaultPrecision( z.zonedDateTime.toInstant(), dialect );
 			assertEquals(
-					DateTimeUtils.roundToDefaultPrecision( nowZoned.toInstant(), dialect ),
-					DateTimeUtils.roundToDefaultPrecision( z.zonedDateTime.toInstant(), dialect )
+					expected,
+					actual
 			);
+			expected = DateTimeUtils.adjustToDefaultPrecision( nowOffset.toInstant(), dialect );
+			actual = DateTimeUtils.adjustToDefaultPrecision( z.offsetDateTime.toInstant(), dialect );
 			assertEquals(
-					DateTimeUtils.roundToDefaultPrecision( nowOffset.toInstant(), dialect ),
-					DateTimeUtils.roundToDefaultPrecision( z.offsetDateTime.toInstant(), dialect )
+					expected,
+					actual
 			);
 			assertEquals( systemZone, z.zonedDateTime.getZone() );
 			assertEquals( systemOffset, z.offsetDateTime.getOffset() );
diff --git a/hibernate-core/src/test/java/org/hibernate/orm/test/timezones/PassThruZonedTest.java b/hibernate-core/src/test/java/org/hibernate/orm/test/timezones/PassThruZonedTest.java
index 8404eb25e4..45d28cecd1 100644
--- a/hibernate-core/src/test/java/org/hibernate/orm/test/timezones/PassThruZonedTest.java
+++ b/hibernate-core/src/test/java/org/hibernate/orm/test/timezones/PassThruZonedTest.java
@@ -56,13 +56,17 @@ public class PassThruZonedTest {
 			ZoneId systemZone = ZoneId.systemDefault();
 			ZoneOffset systemOffset = systemZone.getRules().getOffset( Instant.now() );
 			final Dialect dialect = scope.getSessionFactory().getJdbcServices().getDialect();
+			Instant expected = DateTimeUtils.adjustToDefaultPrecision( nowZoned.toInstant(), dialect );
+			Instant actual = DateTimeUtils.adjustToDefaultPrecision( z.zonedDateTime.toInstant(), dialect );
 			assertEquals(
-					DateTimeUtils.roundToDefaultPrecision( nowZoned.toInstant(), dialect ),
-					DateTimeUtils.roundToDefaultPrecision( z.zonedDateTime.toInstant(), dialect )
+					expected,
+					actual
 			);
+			expected = DateTimeUtils.adjustToDefaultPrecision( nowOffset.toInstant(), dialect );
+			actual = DateTimeUtils.adjustToDefaultPrecision( z.offsetDateTime.toInstant(), dialect );
 			assertEquals(
-					DateTimeUtils.roundToDefaultPrecision( nowOffset.toInstant(), dialect ),
-					DateTimeUtils.roundToDefaultPrecision( z.offsetDateTime.toInstant(), dialect )
+					expected,
+					actual
 			);
 			assertEquals( systemZone, z.zonedDateTime.getZone() );
 			assertEquals( systemOffset, z.offsetDateTime.getOffset() );
diff --git a/hibernate-core/src/test/java/org/hibernate/orm/test/timezones/UTCNormalizedInstantTest.java b/hibernate-core/src/test/java/org/hibernate/orm/test/timezones/UTCNormalizedInstantTest.java
index dae2242aa8..9f4c569c43 100644
--- a/hibernate-core/src/test/java/org/hibernate/orm/test/timezones/UTCNormalizedInstantTest.java
+++ b/hibernate-core/src/test/java/org/hibernate/orm/test/timezones/UTCNormalizedInstantTest.java
@@ -46,12 +46,12 @@ public class UTCNormalizedInstantTest {
 			final Zoned z = s.find(Zoned.class, id);
 			final Dialect dialect = scope.getSessionFactory().getJdbcServices().getDialect();
 			assertEquals(
-					DateTimeUtils.roundToDefaultPrecision( z.utcInstant, dialect ),
-					DateTimeUtils.roundToDefaultPrecision( instant, dialect )
+					DateTimeUtils.adjustToDefaultPrecision( z.utcInstant, dialect ),
+					DateTimeUtils.adjustToDefaultPrecision( instant, dialect )
 			);
 			assertEquals(
-					DateTimeUtils.roundToDefaultPrecision( z.localInstant, dialect ),
-					DateTimeUtils.roundToDefaultPrecision( instant, dialect )
+					DateTimeUtils.adjustToDefaultPrecision( z.localInstant, dialect ),
+					DateTimeUtils.adjustToDefaultPrecision( instant, dialect )
 			);
 		});
 	}
@@ -79,13 +79,16 @@ public class UTCNormalizedInstantTest {
 			scope.inSession( s-> {
 				final Zoned z = s.find(Zoned.class, id);
 				final Dialect dialect = scope.getSessionFactory().getJdbcServices().getDialect();
+				Instant expected = DateTimeUtils.adjustToDefaultPrecision( z.utcInstant, dialect );
+			Instant actual = DateTimeUtils.adjustToDefaultPrecision( instant, dialect );
 				assertEquals(
-						DateTimeUtils.roundToDefaultPrecision( z.utcInstant, dialect ),
-						DateTimeUtils.roundToDefaultPrecision( instant, dialect )
-				);
-				assertEquals(
-						DateTimeUtils.roundToDefaultPrecision( z.localInstant, dialect ),
-						DateTimeUtils.roundToDefaultPrecision( instant, dialect )
+						expected,
+					actual
+			);
+			expected = DateTimeUtils.adjustToDefaultPrecision( z.localInstant, dialect );
+			assertEquals(
+					expected,
+					actual
 				);
 			});
 		}
diff --git a/hibernate-core/src/test/java/org/hibernate/orm/test/timezones/UTCNormalizedZonedTest.java b/hibernate-core/src/test/java/org/hibernate/orm/test/timezones/UTCNormalizedZonedTest.java
index cbab481e0f..88dd037d9d 100644
--- a/hibernate-core/src/test/java/org/hibernate/orm/test/timezones/UTCNormalizedZonedTest.java
+++ b/hibernate-core/src/test/java/org/hibernate/orm/test/timezones/UTCNormalizedZonedTest.java
@@ -1,5 +1,6 @@
 package org.hibernate.orm.test.timezones;
 
+import java.time.Instant;
 import java.time.OffsetDateTime;
 import java.time.ZoneId;
 import java.time.ZoneOffset;
@@ -53,13 +54,17 @@ public class UTCNormalizedZonedTest {
 		scope.inSession( s-> {
 			Zoned z = s.find(Zoned.class, id);
 			final Dialect dialect = scope.getSessionFactory().getJdbcServices().getDialect();
+			Instant expected = DateTimeUtils.adjustToDefaultPrecision( nowZoned.toInstant(), dialect );
+			Instant actual = DateTimeUtils.adjustToDefaultPrecision( z.zonedDateTime.toInstant(), dialect );
 			assertEquals(
-					DateTimeUtils.roundToDefaultPrecision( nowZoned.toInstant(), dialect ),
-					DateTimeUtils.roundToDefaultPrecision( z.zonedDateTime.toInstant(), dialect )
+					expected,
+					actual
 			);
+			expected = DateTimeUtils.adjustToDefaultPrecision( nowOffset.toInstant(), dialect );
+			actual = DateTimeUtils.adjustToDefaultPrecision( z.offsetDateTime.toInstant(), dialect );
 			assertEquals(
-					DateTimeUtils.roundToDefaultPrecision( nowOffset.toInstant(), dialect ),
-					DateTimeUtils.roundToDefaultPrecision( z.offsetDateTime.toInstant(), dialect )
+					expected,
+					actual
 			);
 			assertEquals( ZoneId.of("Z"), z.zonedDateTime.getZone() );
 			assertEquals( ZoneOffset.ofHours(0), z.offsetDateTime.getOffset() );