fgdata/Aircraft/Instruments-3d/clock/clock.xml

<?xml version="1.0"?>

<PropertyList>

 <path>clock.ac</path>

 <animation>
  <type>rotate</type>
  <object-name>SecondHand</object-name>
  <property>/sim/time/utc/day-seconds</property>
  <factor>6</factor>
  <axis>
   <x>-1</x>
   <y>0</y>
   <z>0</z>
  </axis>
 </animation>

 <animation>
  <type>rotate</type>
  <object-name>MinuteHand</object-name>
  <property>/sim/time/utc/day-seconds</property>
  <factor>0.1</factor>
  <axis>
   <x>-1</x>
   <y>0</y>
   <z>0</z>
  </axis>
 </animation>

 <animation>
  <type>rotate</type>
  <object-name>HourHand</object-name>
  <property>/sim/time/utc/day-seconds</property>
  <factor>0.008333</factor>
  <axis>
   <x>-1</x>
   <y>0</y>
   <z>0</z>
  </axis>
 </animation>

</PropertyList>