diff --git a/ffdc/plugins/date_time_utils.py b/ffdc/plugins/date_time_utils.py
new file mode 100644
index 0000000..8bc46d4
--- /dev/null
+++ b/ffdc/plugins/date_time_utils.py
@@ -0,0 +1,28 @@
+#!/usr/bin/env python
+
+r"""
+This module contains functions having to do with date time filter.
+"""
+
+from datetime import datetime
+
+
+def convert_string_dateime(date_str, date_format, desired_format):
+    r"""
+    Return a date time formatted from a string datetime.
+
+    Description of arguments(s):
+    date_str            Date time string e.g 2021072418161
+                        or list ["2021072418161", "20210723163401"]
+    date_format         Date time pattern of the string date time
+                        e.g '%Y%m%d%H%M%S'
+    desired_format      User define format e.g '%m/%d/%Y - %H:%M:%S'
+    """
+
+    if isinstance(date_str, list):
+        tmp_date = []
+        for date in date_str:
+            tmp_date.append(datetime.strptime(date, date_format).strftime(desired_format))
+        return tmp_date
+    else:
+        return datetime.strptime(date_str, date_format).strftime(desired_format)