diff --git a/src/Logging.py b/src/Logging.py
index 61b90402..0f636587 100644
--- a/src/Logging.py
+++ b/src/Logging.py
@@ -13,7 +13,8 @@ LEVELS = {
 class BitBotFormatter(logging.Formatter):
     def formatTime(self, record, datefmt=None):
         datetime_obj = datetime.datetime.fromtimestamp(record.created)
-        return utils.datetime.iso8601_format(datetime_obj, milliseconds=True)
+        return utils.datetime.iso8601_format(datetime_obj,
+            timespec=utils.datetime.TimeSpec.MILLISECOND)
 
 class HookedHandler(logging.StreamHandler):
     def __init__(self, func: typing.Callable[[int, str], None]):
diff --git a/src/utils/datetime.py b/src/utils/datetime.py
index 05ae6fc8..2cb63f23 100644
--- a/src/utils/datetime.py
+++ b/src/utils/datetime.py
@@ -1,37 +1,46 @@
-import re, typing
+import enum, re, typing
 import datetime as _datetime
 import dateutil.parser
 
 ISO8601_FORMAT_DT = "%Y-%m-%dT%H:%M:%S"
 ISO8601_FORMAT_TZ = "%z"
 
-DATETIME_HUMAN = "%Y/%m/%d %H:%M:%S"
+TIME_HUMAN = "%H:%M:%S"
 DATE_HUMAN = "%Y-%m-%d"
 
+class TimeSpec(enum.Enum):
+    NORMAL = 1
+    MILLISECOND = 2
+
 def utcnow() -> _datetime.datetime:
     return _datetime.datetime.utcnow().replace(tzinfo=_datetime.timezone.utc)
 def datetime_timestamp(seconds: float) -> _datetime.datetime:
     return _datetime.datetime.fromtimestamp(seconds).replace(
         tzinfo=_datetime.timezone.utc)
 
-def iso8601_format(dt: _datetime.datetime, milliseconds: bool=False) -> str:
+def iso8601_format(dt: _datetime.datetime, timespec: TimeSpec=TimeSpec.NORMAL
+        ) -> str:
     dt_format = dt.strftime(ISO8601_FORMAT_DT)
     tz_format = dt.strftime(ISO8601_FORMAT_TZ)
 
     ms_format = ""
-    if milliseconds:
+    if timespec == TimeSpec.MILLISECOND:
         ms_format = ".%s" % str(int(dt.microsecond/1000)).zfill(3)
 
     return "%s%s%s" % (dt_format, ms_format, tz_format)
-def iso8601_format_now(milliseconds: bool=False) -> str:
-    return iso8601_format(utcnow(), milliseconds=milliseconds)
+def iso8601_format_now(timespec: TimeSpec=TimeSpec.NORMAL) -> str:
+    return iso8601_format(utcnow(), timespec)
 
 def iso8601_parse(s: str) -> _datetime.datetime:
     return dateutil.parser.parse(s)
 
-def datetime_human(dt: _datetime.datetime):
-    return _datetime.datetime.strftime(dt, DATETIME_HUMAN)
-def date_human(dt: _datetime.datetime):
+def datetime_human(dt: _datetime.datetime, timespec: TimeSpec=TimeSpec.NORMAL):
+    date = _datetime.datetime.strftime(dt, DATE_HUMAN)
+    time = _datetime.datetime.strftime(dt, TIME_HUMAN)
+    if timespec == TimeSpec.MILLISECOND:
+        time += ".%s" % int(dt.microsecond/1000)
+    return "%s %s" % (date, time)
+def date_human(dt: _datetime.datetime, timespec: TimeSpec=TimeSpec.NORMAL):
     return _datetime.datetime.strftime(dt, DATE_HUMAN)
 
 TIME_SECOND = 1