diff --git a/memos/indexing.py b/memos/indexing.py
index 81aad67..998e56a 100644
--- a/memos/indexing.py
+++ b/memos/indexing.py
@@ -1,5 +1,6 @@
 import json
 from typing import List
+from datetime import datetime
 
 from .schemas import (
     MetadataType,
@@ -17,6 +18,26 @@ def convert_metadata_value(metadata: EntityMetadata):
         return metadata.value
 
 
+def parse_date_fields(entity):
+    timestamp_metadata = next(
+        (m for m in entity.metadata_entries if m.key == "timestamp"), None
+    )
+
+    if timestamp_metadata and len(timestamp_metadata.value) == 15:
+        try:
+            dt = datetime.strptime(timestamp_metadata.value, "%Y%m%d-%H%M%S")
+        except ValueError:
+            dt = entity.file_created_at
+    else:
+        dt = entity.file_created_at
+
+    return {
+        "created_date": dt.strftime("%Y-%m-%d"),
+        "created_month": dt.strftime("%Y-%m"),
+        "created_year": dt.strftime("%Y"),
+    }
+
+
 def bulk_upsert(client, entities):
     documents = [
         EntityIndexItem(
@@ -52,13 +73,16 @@ def bulk_upsert(client, entities):
                     for metadata in entity.metadata_entries
                 ]
             ),
-        ).model_dump(mode='json')
+            **parse_date_fields(entity),
+        ).model_dump(mode="json")
         for entity in entities
     ]
 
     # Sync the entity data to Typesense
     try:
-        response = client.collections["entities"].documents.import_(documents, {'action': 'upsert'})
+        response = client.collections["entities"].documents.import_(
+            documents, {"action": "upsert"}
+        )
         return response
     except Exception as e:
         raise Exception(
@@ -67,6 +91,7 @@ def bulk_upsert(client, entities):
 
 
 def upsert(client, entity):
+    date_fields = parse_date_fields(entity)
     entity_data = EntityIndexItem(
         id=str(entity.id),
         filepath=entity.filepath,
@@ -100,6 +125,9 @@ def upsert(client, entity):
                 for metadata in entity.metadata_entries
             ]
         ),
+        created_date=date_fields.get("created_date"),
+        created_month=date_fields.get("created_month"),
+        created_year=date_fields.get("created_year"),
     )
 
     # Sync the entity data to Typesense
@@ -153,6 +181,9 @@ def list_all_entities(
                     for entry in hit["document"]["metadata_entries"]
                 ],
                 metadata_text=hit["document"]["metadata_text"],
+                created_date=hit["document"].get("created_date"),
+                created_month=hit["document"].get("created_month"),
+                created_year=hit["document"].get("created_year"),
             )
             for hit in response["hits"]
         ]
@@ -219,6 +250,9 @@ def search_entities(
                     )
                     for entry in hit["document"]["metadata_entries"]
                 ],
+                created_date=hit["document"]["created_date"],
+                created_month=hit["document"]["created_month"],
+                created_year=hit["document"]["created_year"],
             )
             for hit in search_results["hits"]
         ]
@@ -250,6 +284,9 @@ def fetch_entity_by_id(client, id: str) -> EntityIndexItem:
                 )
                 for entry in document["metadata_entries"]
             ],
+            created_date=document.get("created_date"),
+            created_month=document.get("created_month"),
+            created_year=document.get("created_year"),
         )
     except Exception as e:
         raise Exception(
diff --git a/memos/initialize_typesense.py b/memos/initialize_typesense.py
index 35fa317..c0c3b1c 100644
--- a/memos/initialize_typesense.py
+++ b/memos/initialize_typesense.py
@@ -25,6 +25,9 @@ schema = {
         {"name": "filename", "type": "string", "infix": True},
         {"name": "size", "type": "int32"},
         {"name": "file_created_at", "type": "int64", "facet": False},
+        {"name": "created_date", "type": "string", "facet": True, "optional": True},
+        {"name": "created_month", "type": "string", "facet": True, "optional": True},
+        {"name": "created_year", "type": "string", "facet": True, "optional": True},
         {"name": "file_last_modified_at", "type": "int64", "facet": False},
         {"name": "file_type", "type": "string", "facet": True},
         {"name": "file_type_group", "type": "string", "facet": True},
@@ -59,23 +62,54 @@ schema = {
 }
 
 
-if __name__ == "__main__":
+def update_collection_fields(client, schema):
+    existing_collection = client.collections["entities"].retrieve()
+    existing_fields = {field["name"]: field for field in existing_collection["fields"]}
+    new_fields = {field["name"]: field for field in schema["fields"]}
 
+    fields_to_add = []
+    for name, field in new_fields.items():
+        if name not in existing_fields:
+            fields_to_add.append(field)
+        else:
+            # Check if the field can be updated
+            updatable_properties = ["facet", "optional"]
+            for prop in updatable_properties:
+                if prop in field and field[prop] != existing_fields[name].get(prop):
+                    fields_to_add.append(field)
+                    break
+
+    if fields_to_add:
+        client.collections["entities"].update({"fields": fields_to_add})
+        print(
+            f"Added/updated {len(fields_to_add)} fields in the 'entities' collection."
+        )
+    else:
+        print("No new fields to add or update in the 'entities' collection.")
+
+
+if __name__ == "__main__":
     import sys
 
-    # Check if "--force" parameter is provided
     force_recreate = "--force" in sys.argv
 
-    # Drop the collection if it exists and "--force" parameter is provided
-    if force_recreate:
-        try:
+    try:
+        # Check if the collection exists
+        existing_collection = client.collections["entities"].retrieve()
+
+        if force_recreate:
             client.collections["entities"].delete()
             print("Existing Typesense collection 'entities' deleted successfully.")
-        except Exception as e:
-            print(
-                f"Failed to delete existing Typesense collection 'entities': {str(e)}"
-            )
+            client.collections.create(schema)
+            print("Typesense collection 'entities' recreated successfully.")
+        else:
+            # Update the fields of the existing collection
+            update_collection_fields(client, schema)
 
-    # Recreate the collection in Typesense
-    client.collections.create(schema)
-    print("Typesense collection 'entities' created successfully.")
+    except typesense.exceptions.ObjectNotFound:
+        # Collection doesn't exist, create it
+        client.collections.create(schema)
+        print("Typesense collection 'entities' created successfully.")
+
+    except Exception as e:
+        print(f"An error occurred: {str(e)}")
diff --git a/memos/schemas.py b/memos/schemas.py
index 0c4b92e..d31aebf 100644
--- a/memos/schemas.py
+++ b/memos/schemas.py
@@ -174,6 +174,9 @@ class EntityIndexItem(BaseModel):
     filename: str
     size: int
     file_created_at: int = Field(..., description="Unix timestamp")
+    created_date: Optional[str] = None
+    created_month: Optional[str] = None
+    created_year: Optional[str] = None
     file_last_modified_at: int = Field(..., description="Unix timestamp")
     file_type: str
     file_type_group: str
@@ -191,6 +194,9 @@ class EntitySearchResult(BaseModel):
     filename: str
     size: int
     file_created_at: int = Field(..., description="Unix timestamp")
+    created_date: Optional[str] = None
+    created_month: Optional[str] = None
+    created_year: Optional[str] = None
     file_last_modified_at: int = Field(..., description="Unix timestamp")
     file_type: str
     file_type_group: str
@@ -198,4 +204,4 @@ class EntitySearchResult(BaseModel):
     library_id: int
     folder_id: int
     tags: List[str]
-    metadata_entries: List[MetadataIndexItem]
+    metadata_entries: List[MetadataIndexItem]
\ No newline at end of file