diff --git a/api/apps/restful_apis/chat_api.py b/api/apps/restful_apis/chat_api.py
index cf04953602..456df204ea 100644
--- a/api/apps/restful_apis/chat_api.py
+++ b/api/apps/restful_apis/chat_api.py
@@ -94,7 +94,7 @@ _DEFAULT_PROMPT_CONFIG = {
         "      The above is the knowledge base."
     ),
     "prologue": "Hi! I'm your assistant. What can I do for you?",
-    "parameters": [{"key": "knowledge", "optional": False}],
+    "parameters": [{"key": "knowledge", "optional": False}, {"key": "date", "optional": True}],
     "empty_response": "Sorry! No relevant content was found in the knowledge base!",
     "quote": True,
     "tts": False,
@@ -353,6 +353,8 @@ def _apply_prompt_defaults(req):
 
     if req.get("kb_ids") and not prompt_config.get("parameters") and "{knowledge}" in prompt_config.get("system", ""):
         prompt_config["parameters"] = [{"key": "knowledge", "optional": False}]
+    if not any(p.get("key") == "date" for p in prompt_config.get("parameters", [])):
+        prompt_config.setdefault("parameters", []).append({"key": "date", "optional": True})
 
 
 @manager.route("/chats", methods=["POST"])  # noqa: F821
diff --git a/api/db/services/dialog_service.py b/api/db/services/dialog_service.py
index b99207e073..2412c05d4f 100644
--- a/api/db/services/dialog_service.py
+++ b/api/db/services/dialog_service.py
@@ -22,7 +22,7 @@ from copy import deepcopy
 from rag.advanced_rag.agentic_rag import RAGTools
 
 logger = logging.getLogger(__name__)
-from datetime import datetime
+from datetime import datetime, timezone
 from functools import partial
 from timeit import default_timer as timer
 from langfuse import Langfuse, propagate_attributes
@@ -335,11 +335,13 @@ async def async_chat_solo(dialog, messages, stream=True, session_id=None):
         msg[-1]["content"] += attachments
     if model_config["model_type"] == "chat" and image_attachments:
         convert_last_user_msg_to_multimodal(msg, image_attachments, factory)
+    sys_date = datetime.now(timezone.utc).strftime("%Y-%m-%d %H:%M:%S")
+    system_prompt = prompt_config.get("system", "").replace("{date}", sys_date)
     if stream:
         if model_config["model_type"] == "chat":
-            stream_iter = chat_mdl.async_chat_streamly_delta(prompt_config.get("system", ""), msg, dialog.llm_setting)
+            stream_iter = chat_mdl.async_chat_streamly_delta(system_prompt, msg, dialog.llm_setting)
         else:
-            stream_iter = chat_mdl.async_chat_streamly_delta(prompt_config.get("system", ""), msg, dialog.llm_setting, images=image_files)
+            stream_iter = chat_mdl.async_chat_streamly_delta(system_prompt, msg, dialog.llm_setting, images=image_files)
         async for kind, value, state in _stream_with_think_delta(stream_iter):
             if kind == "marker":
                 flags = {"start_to_think": True} if value == "<think>" else {"end_to_think": True}
@@ -348,9 +350,9 @@ async def async_chat_solo(dialog, messages, stream=True, session_id=None):
             yield {"answer": value, "reference": {}, "audio_binary": tts(tts_mdl, value), "prompt": "", "created_at": time.time(), "final": False}
     else:
         if model_config["model_type"] == "chat":
-            answer = await chat_mdl.async_chat(prompt_config.get("system", ""), msg, dialog.llm_setting)
+            answer = await chat_mdl.async_chat(system_prompt, msg, dialog.llm_setting)
         else:
-            answer = await chat_mdl.async_chat(prompt_config.get("system", ""), msg, dialog.llm_setting, images=image_files)
+            answer = await chat_mdl.async_chat(system_prompt, msg, dialog.llm_setting, images=image_files)
         user_content = msg[-1].get("content", "[content not available]")
         logging.debug("User: {}|Assistant: {}".format(user_content, answer))
         yield {"answer": answer, "reference": {}, "audio_binary": tts(tts_mdl, answer), "prompt": "", "created_at": time.time()}
@@ -677,6 +679,8 @@ async def async_chat(dialog, messages, stream=True, **kwargs):
         param_keys.append("knowledge")
     logging.debug(f"attachments={attachments}, param_keys={param_keys}, embd_mdl={embd_mdl}")
 
+    sys_date = datetime.now(timezone.utc).strftime("%Y-%m-%d %H:%M:%S")
+    kwargs["date"] = sys_date
     for p in prompt_config.get("parameters", []):
         if p["key"] == "knowledge":
             continue
diff --git a/test/testcases/restful_api/test_chats.py b/test/testcases/restful_api/test_chats.py
index 16b8c938e6..4b90675489 100644
--- a/test/testcases/restful_api/test_chats.py
+++ b/test/testcases/restful_api/test_chats.py
@@ -1192,7 +1192,7 @@ def test_chat_create_allows_default_knowledge_placeholder_without_sources_unit(m
     assert res["code"] == 0
     assert saved["kb_ids"] == []
     assert saved["prompt_config"]["system"].find("{knowledge}") >= 0
-    assert saved["prompt_config"]["parameters"] == [{"key": "knowledge", "optional": False}]
+    assert saved["prompt_config"]["parameters"] == [{"key": "knowledge", "optional": False}, {"key": "date", "optional": True}]
 
 
 @pytest.mark.p2
diff --git a/web/src/pages/next-chats/hooks/use-create-chat.ts b/web/src/pages/next-chats/hooks/use-create-chat.ts
index b9ebe2f9bd..3492c6bc08 100644
--- a/web/src/pages/next-chats/hooks/use-create-chat.ts
+++ b/web/src/pages/next-chats/hooks/use-create-chat.ts
@@ -32,7 +32,10 @@ export const useCreateChatDialog = () => {
         refine_multiturn: false,
         use_kg: false,
         reasoning: false,
-        parameters: [{ key: 'knowledge', optional: false }],
+        parameters: [
+          { key: 'knowledge', optional: false },
+          { key: 'date', optional: true },
+        ],
         toc_enhance: false,
       },
       llm_id: defaultModelDictionary?.llm_id,