diff --git a/go/vehicle-gateway/internal/history/query.go b/go/vehicle-gateway/internal/history/query.go
index da35b069..12dfaeb3 100644
--- a/go/vehicle-gateway/internal/history/query.go
+++ b/go/vehicle-gateway/internal/history/query.go
@@ -366,8 +366,8 @@ func normalizeRawFrameQuery(query RawFrameQuery) RawFrameQuery {
 	query.Phone = strings.TrimSpace(query.Phone)
 	query.DeviceID = strings.TrimSpace(query.DeviceID)
 	query.MessageID = strings.TrimSpace(query.MessageID)
-	query.DateFrom = strings.TrimSpace(query.DateFrom)
-	query.DateTo = strings.TrimSpace(query.DateTo)
+	query.DateFrom = normalizeDateTimeLiteral(query.DateFrom)
+	query.DateTo = normalizeDateTimeLiteral(query.DateTo)
 	if query.Limit <= 0 {
 		query.Limit = 20
 	}
@@ -380,8 +380,8 @@ func normalizeLocationQuery(query LocationQuery) LocationQuery {
 	query.VIN = strings.TrimSpace(query.VIN)
 	query.Phone = strings.TrimSpace(query.Phone)
 	query.DeviceID = strings.TrimSpace(query.DeviceID)
-	query.DateFrom = strings.TrimSpace(query.DateFrom)
-	query.DateTo = strings.TrimSpace(query.DateTo)
+	query.DateFrom = normalizeDateTimeLiteral(query.DateFrom)
+	query.DateTo = normalizeDateTimeLiteral(query.DateTo)
 	if query.Limit <= 0 {
 		query.Limit = 20
 	}
@@ -394,8 +394,8 @@ func normalizeMileagePointQuery(query MileagePointQuery) MileagePointQuery {
 	query.VIN = strings.TrimSpace(query.VIN)
 	query.Phone = strings.TrimSpace(query.Phone)
 	query.DeviceID = strings.TrimSpace(query.DeviceID)
-	query.DateFrom = strings.TrimSpace(query.DateFrom)
-	query.DateTo = strings.TrimSpace(query.DateTo)
+	query.DateFrom = normalizeDateTimeLiteral(query.DateFrom)
+	query.DateTo = normalizeDateTimeLiteral(query.DateTo)
 	if query.Limit <= 0 {
 		query.Limit = 20
 	}
@@ -482,10 +482,10 @@ func rawFrameWhere(query RawFrameQuery) []string {
 		}
 	}
 	if query.DateFrom != "" {
-		add("ts >= '" + quote(query.DateFrom) + "'")
+		add("ts >= '" + quote(normalizeDateTimeLiteral(query.DateFrom)) + "'")
 	}
 	if query.DateTo != "" {
-		add("ts <= '" + quote(query.DateTo) + "'")
+		add("ts <= '" + quote(normalizeDateTimeLiteral(query.DateTo)) + "'")
 	}
 	return where
 }
@@ -511,10 +511,10 @@ func locationWhere(query LocationQuery) []string {
 		add("device_id = '" + quote(query.DeviceID) + "'")
 	}
 	if query.DateFrom != "" {
-		add("ts >= '" + quote(query.DateFrom) + "'")
+		add("ts >= '" + quote(normalizeDateTimeLiteral(query.DateFrom)) + "'")
 	}
 	if query.DateTo != "" {
-		add("ts <= '" + quote(query.DateTo) + "'")
+		add("ts <= '" + quote(normalizeDateTimeLiteral(query.DateTo)) + "'")
 	}
 	return where
 }
@@ -540,10 +540,10 @@ func mileagePointWhere(query MileagePointQuery) []string {
 		add("device_id = '" + quote(query.DeviceID) + "'")
 	}
 	if query.DateFrom != "" {
-		add("ts >= '" + quote(query.DateFrom) + "'")
+		add("ts >= '" + quote(normalizeDateTimeLiteral(query.DateFrom)) + "'")
 	}
 	if query.DateTo != "" {
-		add("ts <= '" + quote(query.DateTo) + "'")
+		add("ts <= '" + quote(normalizeDateTimeLiteral(query.DateTo)) + "'")
 	}
 	return where
 }
@@ -793,7 +793,7 @@ func parseMessageID(value string) (int64, bool) {
 }
 
 func validDateTime(value string) bool {
-	value = strings.TrimSpace(value)
+	value = normalizeDateTimeLiteral(value)
 	if value == "" {
 		return true
 	}
@@ -805,6 +805,14 @@ func validDateTime(value string) bool {
 	return false
 }
 
+func normalizeDateTimeLiteral(value string) string {
+	value = strings.TrimSpace(value)
+	if len(value) == len("2006-01-02T15:04:05") && value[10] == 'T' {
+		return value[:10] + " " + value[11:]
+	}
+	return value
+}
+
 func safeIdentifier(value string) bool {
 	if value == "" {
 		return false
diff --git a/go/vehicle-gateway/internal/history/query_test.go b/go/vehicle-gateway/internal/history/query_test.go
index 1c206078..bd657c0d 100644
--- a/go/vehicle-gateway/internal/history/query_test.go
+++ b/go/vehicle-gateway/internal/history/query_test.go
@@ -256,6 +256,18 @@ func TestRawFrameHandlerRejectsInvalidLimit(t *testing.T) {
 	}
 }
 
+func TestParseRawFrameQueryAcceptsDatetimeLocalValues(t *testing.T) {
+	request := httptest.NewRequest(http.MethodGet, "/api/history/raw-frames?dateFrom=2026-07-01T00:00:00&dateTo=2026-07-02T00:00:00", nil)
+
+	query, err := parseRawFrameQuery(request)
+	if err != nil {
+		t.Fatalf("parseRawFrameQuery() error = %v", err)
+	}
+	if query.DateFrom != "2026-07-01 00:00:00" || query.DateTo != "2026-07-02 00:00:00" {
+		t.Fatalf("date range = %q -> %q", query.DateFrom, query.DateTo)
+	}
+}
+
 func TestParseMessageIDSupportsDecimalAndHex(t *testing.T) {
 	for raw, want := range map[string]int64{
 		"512":    512,
@@ -323,8 +335,8 @@ func TestBuildRawFrameSQLUsesLiteralsForTDengine(t *testing.T) {
 		VehicleKey: "JT808:013307811350",
 		VIN:        "VIN'1",
 		MessageID:  "0x0200",
-		DateFrom:   "2026-07-01 00:00:00",
-		DateTo:     "2026-07-01 23:59:59",
+		DateFrom:   "2026-07-01T00:00:00",
+		DateTo:     "2026-07-01T23:59:59",
 		Limit:      20,
 		Offset:     5,
 	})
@@ -336,6 +348,8 @@ func TestBuildRawFrameSQLUsesLiteralsForTDengine(t *testing.T) {
 		"vehicle_key = 'JT808:013307811350'",
 		"vin = 'VIN''1'",
 		"message_id = 512",
+		"ts >= '2026-07-01 00:00:00'",
+		"ts <= '2026-07-01 23:59:59'",
 		"LIMIT 20 OFFSET 5",
 	} {
 		if !strings.Contains(sqlText, want) {