diff --git a/airbyte_cdk/sources/file_based/file_based_stream_reader.py b/airbyte_cdk/sources/file_based/file_based_stream_reader.py
index 7443dccd6..826d89112 100644
--- a/airbyte_cdk/sources/file_based/file_based_stream_reader.py
+++ b/airbyte_cdk/sources/file_based/file_based_stream_reader.py
@@ -5,7 +5,7 @@
 import logging
 import time
 from abc import ABC, abstractmethod
-from datetime import datetime
+from datetime import timezone
 from enum import Enum
 from io import IOBase
 from os import makedirs, path
@@ -24,6 +24,7 @@
 from airbyte_cdk.sources.file_based.exceptions import FileSizeLimitError
 from airbyte_cdk.sources.file_based.file_record_data import FileRecordData
 from airbyte_cdk.sources.file_based.remote_file import RemoteFile, UploadableRemoteFile
+from airbyte_cdk.utils.datetime_helpers import ab_datetime_parse
 
 
 class FileReadMode(Enum):
@@ -105,7 +106,7 @@ def filter_files_by_globs_and_start_date(
         Utility method for filtering files based on globs.
         """
         start_date = (
-            datetime.strptime(self.config.start_date, self.DATE_TIME_FORMAT)
+            ab_datetime_parse(self.config.start_date)
             if self.config and self.config.start_date
             else None
         )
@@ -113,7 +114,12 @@ def filter_files_by_globs_and_start_date(
 
         for file in files:
             if self.file_matches_globs(file, globs):
-                if file.uri not in seen and (not start_date or file.last_modified >= start_date):
+                last_modified = (
+                    file.last_modified
+                    if file.last_modified.tzinfo is not None
+                    else file.last_modified.replace(tzinfo=timezone.utc)
+                )
+                if file.uri not in seen and (not start_date or last_modified >= start_date):
                     seen.add(file.uri)
                     yield file
 
diff --git a/unit_tests/sources/file_based/test_file_based_stream_reader.py b/unit_tests/sources/file_based/test_file_based_stream_reader.py
index 13fa1025c..7058545bd 100644
--- a/unit_tests/sources/file_based/test_file_based_stream_reader.py
+++ b/unit_tests/sources/file_based/test_file_based_stream_reader.py
@@ -408,6 +408,41 @@ def documentation_url(cls) -> AnyUrl:
             set(),
             id="all_csvs_modified_exactly_on_start_date",
         ),
+        pytest.param(
+            ["**/*.csv"],
+            {"start_date": "2023-06-01T00:00:00Z", "streams": []},
+            {"a.csv", "a/b.csv", "a/c.csv", "a/b/c.csv", "a/c/c.csv", "a/b/c/d.csv"},
+            set(),
+            id="start_date_without_microseconds",
+        ),
+        pytest.param(
+            ["**/*.csv"],
+            {"start_date": "2023-06-10T00:00:00Z", "streams": []},
+            set(),
+            set(),
+            id="start_date_without_microseconds_modified_before",
+        ),
+        pytest.param(
+            ["**/*.csv"],
+            {"start_date": "2023-06-01T00:00:00+00:00", "streams": []},
+            {"a.csv", "a/b.csv", "a/c.csv", "a/b/c.csv", "a/c/c.csv", "a/b/c/d.csv"},
+            set(),
+            id="start_date_with_utc_offset",
+        ),
+        pytest.param(
+            ["**/*.csv"],
+            {"start_date": "2023-06-05T08:54:07+05:00", "streams": []},
+            {"a.csv", "a/b.csv", "a/c.csv", "a/b/c.csv", "a/c/c.csv", "a/b/c/d.csv"},
+            set(),
+            id="start_date_with_non_zero_offset",
+        ),
+        pytest.param(
+            ["**/*.csv"],
+            {"start_date": "2023-06-01", "streams": []},
+            {"a.csv", "a/b.csv", "a/c.csv", "a/b/c.csv", "a/c/c.csv", "a/b/c/d.csv"},
+            set(),
+            id="start_date_date_only",
+        ),
     ],
 )
 def test_globs_and_prefixes_from_globs(