diff --git a/src/calculation_time_constrains/service.py b/src/calculation_time_constrains/service.py
index fc6e73d..18770f4 100644
--- a/src/calculation_time_constrains/service.py
+++ b/src/calculation_time_constrains/service.py
@@ -421,8 +421,8 @@ async def get_calculation_by_assetnum(
 async def create_calculation_result_service(
     db_session: DbSession, calculation: CalculationData, token: str
 ) -> CalculationTimeConstrainsRead:
-    start_date = datetime.datetime(2025, 1, 1)
-    end_date = datetime.datetime(2027, 12, 31)
+    start_date = datetime.datetime(2023, 1, 23)
+    end_date = datetime.datetime(2025, 12, 31)
 
 
     months_num = get_months_between(start_date, end_date)