static mapping = {
    dateCreated sqlType:'timestamptz'
}

<property name="jadira.usertype.autoRegisterUserTypes"
          value="true"/>
<property name="jadira.usertype.databaseZone"
          value="jvm"/>
<property name="jadira.usertype.javaZone"
          value="jvm"/>

<prop key="jadira.usertype.autoRegisterUserTypes">true</prop>
            <prop key="jadira.usertype.databaseZone">America/Los_Angeles</prop>
            <prop key="jadira.usertype.javaZone">America/Los_Angeles</prop>

import java.sql.Timestamp;

import org.hibernate.SessionFactory;
import org.hibernate.usertype.ParameterizedType;
import org.jadira.usertype.dateandtime.joda.columnmapper.TimestampColumnDateTimeMapper;
import org.jadira.usertype.spi.shared.AbstractVersionableUserType;
import org.jadira.usertype.spi.shared.IntegratorConfiguredType;
import org.joda.time.DateTime;

public class PersistentDateTime extends AbstractVersionableUserType<DateTime, Timestamp, TimestampColumnDateTimeMapper> implements ParameterizedType, IntegratorConfiguredType {

@Override
public int compare(Object o1, Object o2) {
    return ((DateTime) o1).compareTo((DateTime) o2);
}

@Override
public void applyConfiguration(SessionFactory sessionFactory) {

    super.applyConfiguration(sessionFactory);

    TimestampColumnDateTimeMapper columnMapper = (TimestampColumnDateTimeMapper) getColumnMapper();
    columnMapper.setDatabaseZone(null);
    columnMapper.setJavaZone(null);
}
}