diff --git a/.github/actions/spelling/expect.txt b/.github/actions/spelling/expect.txt
index cbaf97ef..2b7a1b73 100644
--- a/.github/actions/spelling/expect.txt
+++ b/.github/actions/spelling/expect.txt
@@ -115,6 +115,7 @@ isdir
 isfile
 isinstance
 isnumeric
+isoformat
 Isr
 issubclass
 iterdir
@@ -246,6 +247,7 @@ testbuild
 testimpl
 textwrap
 timebase
+timespec
 toctree
 todo
 toolchain
diff --git a/src/fprime/common/models/serialize/time_type.py b/src/fprime/common/models/serialize/time_type.py
index 53baa6a4..7dbff117 100644
--- a/src/fprime/common/models/serialize/time_type.py
+++ b/src/fprime/common/models/serialize/time_type.py
@@ -289,7 +289,10 @@ def to_readable(self, time_zone=None):
 
         # If we could convert to a valid datetime, use that, otherwise, format
         if dt:
-            return dt.strftime("%Y-%m-%d %H:%M:%S%z")
+            # datetime.isoformat() returns time string with microsecond
+            # precision.
+            # This line can be changed for other precisions or needs.
+            return dt.isoformat(timespec="microseconds")
         return "%s: %d.%06ds, context=%d" % (
             TimeBase(self.__timeBase.val).name,
             self.__secs.val,
diff --git a/src/fprime/common/models/serialize/type_base.py b/src/fprime/common/models/serialize/type_base.py
index ad5394cc..30861733 100644
--- a/src/fprime/common/models/serialize/type_base.py
+++ b/src/fprime/common/models/serialize/type_base.py
@@ -4,6 +4,7 @@
 @author: reder
 Replaced type base class with decorators
 """
+
 import abc
 
 from .type_exceptions import AbstractMethodException