diff --git a/src/sync/batch_data.py b/src/sync/batch_data.py
index ada4453..0dbff89 100644
--- a/src/sync/batch_data.py
+++ b/src/sync/batch_data.py
@@ -1,7 +1,7 @@
-"""Main Entry point for price feed sync"""
+"""Main Entry point for batch data sync"""
+import os
 from dune_client.client import DuneClient
 import web3
-import os
 from src.fetch.orderbook import OrderbookFetcher
 from src.logger import set_log
 from src.sync.config import BatchDataSyncConfig
diff --git a/src/sync/common.py b/src/sync/common.py
index aa248b4..94da1db 100644
--- a/src/sync/common.py
+++ b/src/sync/common.py
@@ -95,7 +95,16 @@ def compute_block_and_month_range(node: Web3):
                 current_month_end_datetime.year - 1, 12, 1, 00, 00
             )
         else:
-            previous_month = f"{current_month_end_datetime.year}_{current_month_end_datetime.month - 1}"
+            previous_month = f"""{current_month_end_datetime.year}_
+                {current_month_end_datetime.month - 1}
+            """
+            previous_month_start_datetime = datetime(
+                current_month_end_datetime.year,
+                current_month_end_datetime.month - 1,
+                1,
+                00,
+                00,
+            )
         months_list.append(previous_month)
         previous_month_start_timestamp = previous_month_start_datetime.replace(
             tzinfo=timezone.utc