<Tr> <Td> </Td> <Td> </Td> <Td> 20 </Td> <Td> February 20, 2005 </Td> <Td> July 18, 2005 </Td> </Tr> <Tr> <Td> </Td> <Td> </Td> <Td> 20 </Td> <Td> April 2, 2006 </Td> <Td> November 19, 2006 </Td> </Tr> <Tr> <Td> </Td> <Td> </Td> <Td> 20 </Td> <Td> August 12, 2007 </Td> <Td> October 5, 2008 </Td> </Tr> <Tr> <Td> </Td> <Td> </Td> <Td> 20 </Td> <Td> December 7, 2008 </Td> <Td> December 6, 2009 </Td> </Tr>

What time and channel is robot chicken on