diff --git a/main.py b/main.py
index fe5f1b7..1a95db2 100644
--- a/main.py
+++ b/main.py
@@ -2725,6 +2725,24 @@ async def fastapi_run_project(network: str,start_time:str,end_time=None) -> str:
         #os.rename(filename2, filename)
         return result
 
+@app.get("/runsimulationbydate/", response_class = PlainTextResponse)
+async def fastapi_run_project_by_date(network: str, querydate: str) -> str:
+    filename = 'c:/lock.simulation'
+    filename2 = 'c:/lock.simulation2'
+    if os.path.exists(filename2):
+        print('file exists')
+        raise HTTPException(status_code=409, detail="is in simulation")
+    else:
+        print('file doesnt exists')
+        #os.rename(filename, filename2)
+
+        bg_start_time, bg_end_time = time_api.parse_beijing_date_range(querydate)
+
+        result = run_simulation_ex(name=network, simulation_type='realtime', start_datetime=bg_start_time, end_datetime=bg_end_time)
+        return result
+
+
+
 ############################################################
 # real_time api 37.5
 # example: