The premiere of episodes 52 â `` 61 ( episodes 12-21 of third season ) throughout the week of Sozin 's Comets release received a total of 19 million views , and Avatar reached Neilsen 's list of Top 20 Cable Results for the week ending 20 June 2008 four times . The premiere of episodes 52 â `` 61 throughout the week of Sozin 's Comets release received a total of 19 million views , and Avatar reached Neilsen 's list of Top 20 Cable Results for the week ending June 20 , 2008 four times .