diff --git a/qdrant_client/local/datetime_utils.py b/qdrant_client/local/datetime_utils.py
index c2f957195..714fe5afb 100644
--- a/qdrant_client/local/datetime_utils.py
+++ b/qdrant_client/local/datetime_utils.py
@@ -1,3 +1,4 @@
+import re
 from datetime import datetime, timezone
 
 # These are the formats accepted by qdrant core
@@ -46,4 +47,12 @@ def parse_available_formats(datetime_str: str) -> datetime | None:
     # dt examples to handle:
     # "2021-01-01 00:00:00.000+01"
     # "2021-01-01 00:00:00.000-10"
-    return parse_available_formats(date_str + ":00")
+    # This retry must only fire for an actual hour-only UTC offset at the end of
+    # the string (e.g. "+01" or "-10"). Without this guard, any string that fails
+    # every format above (including truncated datetimes like "2024-06-15 12" or
+    # "2024-06-15T12:30") would also get ":00" appended and could accidentally
+    # match a valid format, silently accepting input that qdrant core rejects.
+    if re.search(r"[+-]\d{2}$", date_str):
+        return parse_available_formats(date_str + ":00")
+
+    return None
diff --git a/qdrant_client/local/local_collection.py b/qdrant_client/local/local_collection.py
index b21c18414..a8c993e63 100644
--- a/qdrant_client/local/local_collection.py
+++ b/qdrant_client/local/local_collection.py
@@ -697,7 +697,12 @@ def search(
 
         required_order = distance_to_order(distance)
 
-        if required_order == DistanceOrder.BIGGER_IS_BETTER or isinstance(
+        # Recommend (best_score/sum_scores), Discover, and Context queries always
+        # compute a sigmoid-based synthetic score where bigger is always better,
+        # regardless of the collection's underlying distance metric. This override
+        # must be applied consistently everywhere required_order is used for these
+        # query types - both for sort direction and for score_threshold comparison.
+        bigger_is_better = required_order == DistanceOrder.BIGGER_IS_BETTER or isinstance(
             query_vector,
             (
                 DiscoveryQuery,
@@ -707,7 +712,9 @@ def search(
                 MultiContextQuery,
                 MultiRecoQuery,
             ),  # sparse structures are not required, sparse always uses DOT
-        ):
+        )
+
+        if bigger_is_better:
             order = np.argsort(scores)[::-1]
         else:
             order = np.argsort(scores)
@@ -727,7 +734,7 @@ def search(
             point_id = self.ids_inv[idx]
 
             if score_threshold is not None:
-                if required_order == DistanceOrder.BIGGER_IS_BETTER:
+                if bigger_is_better:
                     if score < score_threshold:
                         break
                 else: