diff --git a/hapi-fhir-jpaserver-base/src/main/java/ca/uhn/fhir/jpa/dao/DaoConfig.java b/hapi-fhir-jpaserver-base/src/main/java/ca/uhn/fhir/jpa/dao/DaoConfig.java
index 6168d8fe5e4..8d75b767a37 100644
--- a/hapi-fhir-jpaserver-base/src/main/java/ca/uhn/fhir/jpa/dao/DaoConfig.java
+++ b/hapi-fhir-jpaserver-base/src/main/java/ca/uhn/fhir/jpa/dao/DaoConfig.java
@@ -3,6 +3,7 @@ package ca.uhn.fhir.jpa.dao;
 import ca.uhn.fhir.jpa.interceptor.CascadingDeleteInterceptor;
 import ca.uhn.fhir.jpa.model.entity.ModelConfig;
 import ca.uhn.fhir.jpa.model.entity.ResourceEncodingEnum;
+import ca.uhn.fhir.jpa.model.entity.ResourceIndexedSearchParamDate;
 import ca.uhn.fhir.jpa.search.warm.WarmCacheEntry;
 import ca.uhn.fhir.jpa.searchparam.SearchParamConstants;
 import ca.uhn.fhir.rest.api.SearchTotalModeEnum;
@@ -99,6 +100,10 @@ public class DaoConfig {
 	 */
 	private boolean myAllowInlineMatchUrlReferences = true;
 	private boolean myAllowMultipleDelete;
+	/**
+	 * Update setter javadoc if default changes.
+	 */
+	private boolean myUseOrdinalDatesForDayPrecisionSearches = true;
 	/**
 	 * update setter javadoc if default changes
 	 */
@@ -1907,6 +1912,44 @@ public class DaoConfig {
 		setPreExpandValueSetsDefaultCount(Math.min(getPreExpandValueSetsDefaultCount(), getPreExpandValueSetsMaxCount()));
 	}
 
+	/**
+	 * <p>
+	 * Should searches use the integer field {@code SP_VALUE_LOW_DATE_ORDINAL} and {@code SP_VALUE_HIGH_DATE_ORDINAL} in
+	 * {@link ca.uhn.fhir.jpa.model.entity.ResourceIndexedSearchParamDate} when resolving searches where all predicates are using
+	 * precision of {@link ca.uhn.fhir.model.api.TemporalPrecisionEnum#DAY}.
+	 *
+	 * For example, if enabled, the search of {@code Observation?date=2020-02-25} will cause the date to be collapsed down to an
+	 * ordinal {@code 20200225}. It would then be compared against {@link ResourceIndexedSearchParamDate#getValueLowDateOrdinal()}
+	 * and {@link ResourceIndexedSearchParamDate#getValueHighDateOrdinal()}
+	 * </p>
+	 * Default is {@literal true} beginning in HAPI FHIR 4.3.
+	 * </p>
+	 *
+	 * @since 4.3
+	 */
+	public void setUseOrdinalDatesForDayPrecisionSearches(boolean theUseOrdinalDates) {
+		myUseOrdinalDatesForDayPrecisionSearches = theUseOrdinalDates;
+	}
+
+	/**
+	 * <p>
+	 * Should searches use the integer field {@code SP_VALUE_LOW_DATE_ORDINAL} and {@code SP_VALUE_HIGH_DATE_ORDINAL} in
+	 * {@link ca.uhn.fhir.jpa.model.entity.ResourceIndexedSearchParamDate} when resolving searches where all predicates are using
+	 * precision of {@link ca.uhn.fhir.model.api.TemporalPrecisionEnum#DAY}.
+	 *
+	 * For example, if enabled, the search of {@code Observation?date=2020-02-25} will cause the date to be collapsed down to an
+	 *  integer representing the ordinal date {@code 20200225}. It would then be compared against {@link ResourceIndexedSearchParamDate#getValueLowDateOrdinal()}
+	 * and {@link ResourceIndexedSearchParamDate#getValueHighDateOrdinal()}
+	 * </p>
+	 * Default is {@literal true} beginning in HAPI FHIR 4.3.
+	 * </p>
+	 *
+	 * @since 4.3
+	 */
+	public boolean getUseOrdinalDatesForDayPrecisionSearches() {
+		return myUseOrdinalDatesForDayPrecisionSearches;
+	}
+
 	public enum StoreMetaSourceInformationEnum {
 		NONE(false, false),
 		SOURCE_URI(true, false),
diff --git a/hapi-fhir-jpaserver-base/src/main/java/ca/uhn/fhir/jpa/dao/predicate/PredicateBuilderDate.java b/hapi-fhir-jpaserver-base/src/main/java/ca/uhn/fhir/jpa/dao/predicate/PredicateBuilderDate.java
index eebf0f2987f..fc182a9162b 100644
--- a/hapi-fhir-jpaserver-base/src/main/java/ca/uhn/fhir/jpa/dao/predicate/PredicateBuilderDate.java
+++ b/hapi-fhir-jpaserver-base/src/main/java/ca/uhn/fhir/jpa/dao/predicate/PredicateBuilderDate.java
@@ -140,7 +140,9 @@ public class PredicateBuilderDate extends BasePredicateBuilder implements IPredi
 
 		DateParam lowerBound = theRange.getLowerBound();
 		DateParam upperBound = theRange.getUpperBound();
-		boolean isOrdinalComparison = isNullOrDayPrecision(lowerBound) && isNullOrDayPrecision(upperBound);
+		Integer lowerBoundAsOrdinal = theRange.getLowerBoundAsDateInteger();
+		Integer upperBoundAsOrdinal = theRange.getUpperBoundAsDateInteger();
+		boolean isOrdinalComparison = isNullOrDayPrecision(lowerBound) && isNullOrDayPrecision(upperBound) && myDaoConfig.getUseOrdinalDatesForDayPrecisionSearches();
 		Predicate lt = null;
 		Predicate gt = null;
 		Predicate lb = null;
@@ -152,7 +154,7 @@ public class PredicateBuilderDate extends BasePredicateBuilder implements IPredi
 			}
 			//im like 80% sure this should be ub and not lb, as it is an UPPER bound.
 			if (isOrdinalComparison) {
-				lb = theBuilder.lessThan(theFrom.get("myValueLowDateOrdinal"), theRange.getLowerBoundAsDateInteger());
+				lb = theBuilder.lessThan(theFrom.get("myValueLowDateOrdinal"), lowerBoundAsOrdinal);
 			} else {
 				lb = theBuilder.lessThan(theFrom.get("myValueLow"), lowerBoundInstant);
 			}
diff --git a/hapi-fhir-jpaserver-migrate/src/main/java/ca/uhn/fhir/jpa/migrate/tasks/HapiFhirJpaMigrationTasks.java b/hapi-fhir-jpaserver-migrate/src/main/java/ca/uhn/fhir/jpa/migrate/tasks/HapiFhirJpaMigrationTasks.java
index 6ea71e54b73..98778c257f2 100644
--- a/hapi-fhir-jpaserver-migrate/src/main/java/ca/uhn/fhir/jpa/migrate/tasks/HapiFhirJpaMigrationTasks.java
+++ b/hapi-fhir-jpaserver-migrate/src/main/java/ca/uhn/fhir/jpa/migrate/tasks/HapiFhirJpaMigrationTasks.java
@@ -64,10 +64,11 @@ public class HapiFhirJpaMigrationTasks extends BaseMigrationTasks<VersionEnum> {
 		version.onTable("HFJ_RES_VER").modifyColumn("20200220.1", "RES_ID").nonNullable().failureAllowed().withType(BaseTableColumnTypeTask.ColumnTypeEnum.LONG);
 		//
 
-		// Add support for integer comparisons during day-granularity date search.
+		// Add support for integer comparisons during day-precision date search.
 		Builder.BuilderWithTableName spidxDate = version.onTable("HFJ_SPIDX_DATE");
 		spidxDate.addColumn("20200225.1", "SP_VALUE_LOW_DATE_ORDINAL").nullable().type(BaseTableColumnTypeTask.ColumnTypeEnum.INT);
 		spidxDate.addColumn("20200225.2", "SP_VALUE_HIGH_DATE_ORDINAL").nullable().type(BaseTableColumnTypeTask.ColumnTypeEnum.INT);
+
 		spidxDate.addTask(new CalculateOrdinalDatesTask(VersionEnum.V4_3_0, "20200225.3")
 			.setColumnName("SP_VALUE_LOW_DATE_ORDINAL") //It doesn't matter which of the two we choose as they will both be null.
 			.addCalculator("SP_VALUE_LOW_DATE_ORDINAL", t -> ResourceIndexedSearchParamDate.calculateOrdinalValue(t.getDate("SP_VALUE_LOW")))
diff --git a/hapi-fhir-jpaserver-model/src/main/java/ca/uhn/fhir/jpa/model/entity/ResourceIndexedSearchParamDate.java b/hapi-fhir-jpaserver-model/src/main/java/ca/uhn/fhir/jpa/model/entity/ResourceIndexedSearchParamDate.java
index c5ffe82375a..17d011d4e0c 100644
--- a/hapi-fhir-jpaserver-model/src/main/java/ca/uhn/fhir/jpa/model/entity/ResourceIndexedSearchParamDate.java
+++ b/hapi-fhir-jpaserver-model/src/main/java/ca/uhn/fhir/jpa/model/entity/ResourceIndexedSearchParamDate.java
@@ -111,6 +111,14 @@ public class ResourceIndexedSearchParamDate extends BaseResourceIndexedSearchPar
 		this.myValueLowDateOrdinal = generateOrdinalDateInteger(theLow);
 	}
 
+	public Integer getValueLowDateOrdinal() {
+		return myValueLowDateOrdinal;
+	}
+
+	public Integer getValueHighDateOrdinal() {
+		return myValueHighDateOrdinal;
+	}
+
 	@Override
 	@PrePersist
 	public void calculateHashes() {