make the role aware of current time

metagpt/roles/di/role_zero.py

@@ -4,6 +4,7 @@ import inspect
 import json
 import re
 import traceback
+from datetime import datetime
 from typing import Annotated, Callable, Dict, List, Literal, Optional, Tuple
 
 from pydantic import Field, model_validator
@@ -233,6 +234,10 @@ class RoleZero(Role):
                 msg.add_metadata(IMAGES, images)
         return memory
 
+    def _get_prefix(self) -> str:
+        time_info = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
+        return super()._get_prefix() + f" The current time is {time_info}."
+
     async def _act(self) -> Message:
         if self.use_fixed_sop:
             return await super()._act()