diff --git a/tradein-mvp/backend/data/sql/262_scrape_schedules_seed_oblast_city_sweeps_wave2.sql b/tradein-mvp/backend/data/sql/262_scrape_schedules_seed_oblast_city_sweeps_wave2.sql
index 8a0c0520..e03493d7 100644
--- a/tradein-mvp/backend/data/sql/262_scrape_schedules_seed_oblast_city_sweeps_wave2.sql
+++ b/tradein-mvp/backend/data/sql/262_scrape_schedules_seed_oblast_city_sweeps_wave2.sql
@@ -280,7 +280,7 @@ VALUES
     'avito_city_sweep_verkhnyaya_tura',
     false,
     23,
-    24,
+    0,
     ((CURRENT_DATE + INTERVAL '1 day') + make_interval(hours => 23)) AT TIME ZONE 'UTC',
     '{"pages_per_anchor": 3, "detail_top_n": 0, "request_delay_sec": 7.0, "enrich_houses": true, "radius_m": 3000, "interval_days": 3, "city": "verkhnyaya_tura"}'::jsonb
 ),
@@ -427,7 +427,7 @@ VALUES
     'cian_city_sweep_sysert',
     false,
     23,
-    24,
+    0,
     ((CURRENT_DATE + INTERVAL '1 day') + make_interval(hours => 23)) AT TIME ZONE 'UTC',
     '{"pages_per_anchor": 3, "request_delay_sec": 5, "radius_m": 3000, "detail_top_n": 10, "enrich_houses": true, "interval_days": 3, "city": "sysert"}'::jsonb
 ),
@@ -555,7 +555,7 @@ VALUES
     'cian_city_sweep_lesnoy',
     false,
     23,
-    24,
+    0,
     ((CURRENT_DATE + INTERVAL '1 day') + make_interval(hours => 23)) AT TIME ZONE 'UTC',
     '{"pages_per_anchor": 3, "request_delay_sec": 5, "radius_m": 3000, "detail_top_n": 10, "enrich_houses": true, "interval_days": 3, "city": "lesnoy"}'::jsonb
 ),
@@ -766,7 +766,7 @@ VALUES
     'yandex_city_sweep_degtyarsk',
     false,
     23,
-    24,
+    0,
     ((CURRENT_DATE + INTERVAL '1 day') + make_interval(hours => 23)) AT TIME ZONE 'UTC',
     '{"pages_per_anchor": 3, "request_delay_sec": 9, "radius_m": 25000, "interval_days": 3, "city": "degtyarsk"}'::jsonb
 ),
@@ -910,7 +910,7 @@ VALUES
     'yandex_city_sweep_verkhnyaya_tura',
     false,
     23,
-    24,
+    0,
     ((CURRENT_DATE + INTERVAL '1 day') + make_interval(hours => 23)) AT TIME ZONE 'UTC',
     '{"pages_per_anchor": 3, "request_delay_sec": 9, "radius_m": 25000, "interval_days": 3, "city": "verkhnyaya_tura"}'::jsonb
 ),
diff --git a/tradein-mvp/backend/tests/test_migration_262_oblast_city_sweeps_wave2.py b/tradein-mvp/backend/tests/test_migration_262_oblast_city_sweeps_wave2.py
index 23cf7656..75da91a6 100644
--- a/tradein-mvp/backend/tests/test_migration_262_oblast_city_sweeps_wave2.py
+++ b/tradein-mvp/backend/tests/test_migration_262_oblast_city_sweeps_wave2.py
@@ -393,8 +393,27 @@ def _row_windows(path: Path) -> list[tuple[str, str, int, int]]:
 
 
 def test_migration_262_windows_are_one_hour() -> None:
+    """Окно ровно на час. Час 23 заворачивается в 0 (cross-midnight) — scheduler
+    это поддерживает явно (`window_end_hour <= window_start_hour` → окно через
+    полночь, см. scraper_kit.orchestration.scheduler)."""
     for provider, slug, start, end in _row_windows(_MIGRATION_262):
-        assert end == start + 1, f"{provider}_{slug}: window [{start},{end}) не 1-часовое"
+        expected = (start + 1) % 24
+        assert (
+            end == expected
+        ), f"{provider}_{slug}: window [{start},{end}) не 1-часовое (ожидали end={expected})"
+
+
+def test_migration_262_window_hours_satisfy_db_check_constraint() -> None:
+    """Оба часа обязаны попадать в 0..23 — иначе миграция не применится вовсе.
+
+    Регресс: первая версия давала start=23, end=24 у пяти строк. Проверка
+    «end == start + 1» это пропускала, а прод-констрейнт `window_end_range`
+    (052_scrape_schedules.sql: CHECK (window_end_hour BETWEEN 0 AND 23)) —
+    нет, и весь INSERT падал в CI на реальном postgres.
+    """
+    for provider, slug, start, end in _row_windows(_MIGRATION_262):
+        assert 0 <= start <= 23, f"{provider}_{slug}: window_start_hour={start} вне 0..23"
+        assert 0 <= end <= 23, f"{provider}_{slug}: window_end_hour={end} вне 0..23"
 
 
 def test_migration_262_windows_avoid_ekb_and_wave1_occupied_hours() -> None: