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diff --git a/examples/tricks/localutcclock.py b/examples/tricks/localutcclock.py
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+# -*- python -*-
+
+# A xpybar configuration example that demonstrates how you can
+# write a configuration that lets you change the clock between
+# local time and UTC using the keyboard.
+
+# This example requires the package python-posix_ipc, and the
+# example command requires the package cmdipc.
+
+# Caveat: This example is only written to support local displays.
+# If the host part of $DISPLAY contains a dot, this example will
+# not work as expected.
+
+# Caveat: The IPC objects are not cleaned up on exit.
+# After exiting you may want to run
+#     cmdipc -PQrk "/~${USER}.xpybar.$(echo "${DISPLAY}" | cut -d . -f 1)"
+
+# To switch between UTC and localtime run the command
+#     cmdipc -PQk "/~${USER}.xpybar.$(echo "${DISPLAY}" | cut -d . -f 1)" send -- clock
+# You may want to add an executable file in your ~/.local/bin
+# (which should you include in your $PATH) containing the code
+#     #!/bin/sh
+#     exec cmdipc -PQk "/~${USER}.xpybar.$(echo "${DISPLAY}" | cut -d . -f 1)" send -- clock
+# You can then add a hotkey to xbindkeys running that command.
+
+import time
+import threading
+
+from plugins.clock import Clock
+
+
+OUTPUT, HEIGHT, YPOS, TOP = 0, 12, 24, True
+
+
+local_clock = Clock(format = '%Y-(%m)%b-%d %T, %a w%V, %Z', utc = False, sync_to = Clock.SECONDS)
+utc_clock   = Clock(format = '%Y-(%m)%b-%d %T, %a w%V, %Z', utc = True)
+
+my_clock = local_clock
+
+
+def mqueue_wait():
+    import posix_ipc
+    global my_clock
+    qkey = '/~%s.xpybar.%s' % (os.environ['USER'], os.environ['DISPLAY'].split('.')[0])
+    q = posix_ipc.MessageQueue(qkey, posix_ipc.O_CREAT, 0o600, 8, 128)
+    while True:
+        message = q.receive(None)[0].decode('utf-8', 'replace')
+        if message == 'clock':
+            my_clock = utc_clock if (my_clock is not utc_clock) else local_clock
+            bar.invalidate() # Optional, just to force redrawing before the next second
+
+
+start_ = start
+def start():
+    start_()
+    async(mqueue_wait)
+    async(lambda : local_clock.continuous_sync(lambda : bar.invalidate()))
+
+
+def redraw():
+    text = '%s' % my_clock.read()
+    bar.clear()
+    bar.draw_coloured_text(0, 10, 0, 2, text)
+