Filter runway history by observation time

src/database/db_manager.py

@@ -4257,8 +4257,11 @@ class DBManager:
                        wind_dir, wind_speed, rvr, mor, humidity,
                        otime_utc, created_at
                 FROM runway_obs_log
-                WHERE icao = ? AND created_at >= datetime('now', ? || ' minutes')
-                ORDER BY created_at ASC
+                WHERE icao = ?
+                  AND datetime(COALESCE(NULLIF(otime_utc, ''), created_at))
+                      >= datetime('now', ? || ' minutes')
+                ORDER BY datetime(COALESCE(NULLIF(otime_utc, ''), created_at)) ASC,
+                         created_at ASC
                 """,
                 (str(icao).strip().upper(), str(-int(minutes))),
             ).fetchall()

tests/test_observation_collector.py

@@ -1,4 +1,5 @@
 from concurrent.futures import ThreadPoolExecutor, TimeoutError
+from datetime import datetime, timedelta, timezone
 import sqlite3
 import threading
 import time
@@ -270,11 +271,12 @@ def test_observation_collector_persists_amsc_runway_history(tmp_path):
         observation_store=db,
     )
 
+    observed_at = datetime.now(timezone.utc).replace(microsecond=0).isoformat()
     record = ObservationRecord(
         source="amsc_awos",
         city="chengdu",
         value=28.4,
-        observed_at="2026-06-15T10:51:00+00:00",
+        observed_at=observed_at,
         observed_at_local="2026-06-15 18:51:00",
         station_code="ZUUU",
         station_name="Chengdu Shuangliu",
@@ -313,11 +315,40 @@ def test_observation_collector_persists_amsc_runway_history(tmp_path):
     rows = db.get_runway_obs_recent("ZUUU", minutes=60)
 
     assert [row["runway"] for row in rows] == ["02L/20R", "02R/20L"]
-    assert rows[0]["otime_utc"] == "2026-06-15T10:51:00+00:00"
+    assert rows[0]["otime_utc"] == observed_at
     assert rows[0]["target_runway_max"] == 28.4
     assert rows[0]["wind_dir"] == 130
 
 
+def test_runway_obs_recent_filters_by_observation_time_not_insert_time(tmp_path):
+    from src.database.db_manager import DBManager
+
+    db = DBManager(str(tmp_path / "polyweather.db"))
+    now = datetime.now(timezone.utc).replace(microsecond=0)
+    stale_observed_at = (now - timedelta(hours=3)).isoformat()
+    fresh_observed_at = now.isoformat()
+
+    db.append_runway_obs(
+        icao="ZUUU",
+        city="chengdu",
+        runway="02L/20R",
+        target_runway_max=24.0,
+        otime_utc=stale_observed_at,
+    )
+    db.append_runway_obs(
+        icao="ZUUU",
+        city="chengdu",
+        runway="02R/20L",
+        target_runway_max=25.0,
+        otime_utc=fresh_observed_at,
+    )
+
+    rows = db.get_runway_obs_recent("ZUUU", minutes=60)
+
+    assert [row["runway"] for row in rows] == ["02R/20L"]
+    assert rows[0]["otime_utc"] == fresh_observed_at
+
+
 def test_raw_observation_failure_preserves_last_success_and_increments_errors(tmp_path):
     from src.database.db_manager import DBManager
 

tests/test_web_observability.py

@@ -1128,7 +1128,7 @@ def test_chart_scope_overlays_collector_runway_history_from_db(monkeypatch):
 
         def get_runway_obs_recent(self, icao, minutes=60):
             assert icao == "ZSPD"
-            assert minutes == 36 * 60
+            assert minutes == 24 * 60
             return [
                 {
                     "runway": "35R/17L",
@@ -1163,7 +1163,7 @@ def test_chart_data_force_refresh_overlays_collector_runway_history(monkeypatch)
     class FakeCache:
         def get_runway_obs_recent(self, icao, minutes=60):
             assert icao == "ZUUU"
-            assert minutes == 36 * 60
+            assert minutes == 24 * 60
             return [
                 {
                     "runway": "02L/20R",

web/analysis_service.py

@@ -1761,7 +1761,7 @@ def _analyze(
     if isinstance(icao, str) and icao:
         try:
             from src.database.db_manager import DBManager
-            raw_runway_obs = DBManager().get_runway_obs_recent(icao, minutes=36 * 60)
+            raw_runway_obs = DBManager().get_runway_obs_recent(icao, minutes=24 * 60)
             for r in raw_runway_obs:
                 rw = r.get("runway")
                 if not rw:

web/services/city_api.py

@@ -330,7 +330,7 @@ def _overlay_cached_runway_history_from_db(city: str, payload: Dict[str, Any]) -
         return payload
 
     try:
-        rows = legacy_routes._CACHE_DB.get_runway_obs_recent(icao, minutes=36 * 60)
+        rows = legacy_routes._CACHE_DB.get_runway_obs_recent(icao, minutes=24 * 60)
     except Exception as exc:
         logger.debug("chart runway DB overlay skipped city={} icao={}: {}", normalized_city, icao, exc)
         return payload

web/services/latest_observation_overlay.py

@@ -327,7 +327,7 @@ def _append_amsc_runway_history_from_raw_store(
     if not callable(lister):
         return False
     try:
-        rows = lister("amsc_awos", city, minutes=36 * 60, limit=3000)
+        rows = lister("amsc_awos", city, minutes=24 * 60, limit=1500)
     except Exception as exc:
         logger.debug("latest AMSC raw history overlay skipped city={}: {}", city, exc)
         return False