diff --git a/modules/contrib/datetimetz.py b/modules/contrib/datetimetz.py
index be7f569..08c6631 100644
--- a/modules/contrib/datetimetz.py
+++ b/modules/contrib/datetimetz.py
@@ -18,14 +18,14 @@ from __future__ import absolute_import
 import datetime
 import locale
 import logging
-try:
-    import pytz
-    import tzlocal
-except:
-    pass
-import bumblebee.input
-import bumblebee.output
-import bumblebee.engine
+import pytz
+import tzlocal
+
+import core.module
+import core.widget
+import core.input
+
+import util.format
 
 def default_format(module):
     default = '%x %X %Z'
@@ -35,20 +35,21 @@ def default_format(module):
         default = '%X %Z'
     return default
 
-class Module(bumblebee.engine.Module):
-    def __init__(self, engine, config):
-        super(Module, self).__init__(engine, config,
-            bumblebee.output.Widget(full_text=self.get_time))
-        engine.input.register_callback(self, button=bumblebee.input.LEFT_MOUSE, cmd=self.next_tz)
-        engine.input.register_callback(self, button=bumblebee.input.RIGHT_MOUSE, cmd=self.prev_tz)
-        self._fmt = self.parameter('format', default_format(self.name))
+class Module(core.module.Module):
+    def __init__(self, config):
+        super().__init__(config, core.widget.Widget(self.get_time))
+
+        core.input.register(self, button=core.input.LEFT_MOUSE, cmd=self.next_tz)
+        core.input.register(self, button=core.input.RIGHT_MOUSE, cmd=self.prev_tz)
+        self.__fmt = self.parameter('format', self.default_format())
+
         default_timezone = ''
         try:
             default_timezone = tzlocal.get_localzone().zone
         except Exception as e:
             logging.error('unable to get default timezone: {}'.format(str(e)))
         try:
-            self._timezones = self.parameter('timezone', default_timezone).split(',')
+            self._timezones = util.format.aslist(self.parameter('timezone', default_timezone))
         except:
             self._timezones = [default_timezone]
         self._current_tz = 0
@@ -62,11 +63,14 @@ class Module(bumblebee.engine.Module):
         except Exception:
             locale.setlocale(locale.LC_TIME, ('en_US', 'UTF-8'))
 
+    def default_format(self):
+        return '%x %X %Z'
+
     def get_time(self, widget):
         try:
             try:
                 tz = pytz.timezone(self._timezones[self._current_tz].strip())
-                retval = datetime.datetime.now(tz=tzlocal.get_localzone()).astimezone(tz).strftime(self._fmt)
+                retval = datetime.datetime.now(tz=tzlocal.get_localzone()).astimezone(tz).strftime(self.__fmt)
             except pytz.exceptions.UnknownTimeZoneError:
                 retval = '[Unknown timezone: {}]'.format(self._timezones[self._current_tz].strip())
         except Exception as e:
diff --git a/modules/contrib/datetz.py b/modules/contrib/datetz.py
new file mode 100644
index 0000000..48541dc
--- /dev/null
+++ b/modules/contrib/datetz.py
@@ -0,0 +1,21 @@
+# pylint: disable=C0111,R0903
+
+"""Displays the current date and time.
+
+Parameters:
+    * date.format: strftime()-compatible formatting string
+    * date.locale: locale to use rather than the system default
+"""
+
+import core.decorators
+from .datetimetz import Module
+
+class Module(Module):
+    @core.decorators.every(hours=1)
+    def __init__(self, config):
+        super().__init__(config)
+
+    def default_format(self):
+        return '%x %Z'
+
+# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4
diff --git a/modules/contrib/timetz.py b/modules/contrib/timetz.py
new file mode 100644
index 0000000..aeaa6f6
--- /dev/null
+++ b/modules/contrib/timetz.py
@@ -0,0 +1,21 @@
+# pylint: disable=C0111,R0903
+
+"""Displays the current date and time.
+
+Parameters:
+    * time.format: strftime()-compatible formatting string
+    * time.locale: locale to use rather than the system default
+"""
+
+import core.decorators
+from .datetimetz import Module
+
+class Module(Module):
+    @core.decorators.every(seconds=59) # ensures one update per minute
+    def __init__(self, config):
+        super().__init__(config)
+
+    def default_format(self):
+        return '%X %Z'
+
+# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4