The first twelve episodes of Gravity Falls aired in a regular weekly slot on Disney Channel starting in mid-2012, but subsequent episodes were broadcast without similar regularity; it took until August 2013 to broadcast the remaining eight episodes of the first season. The second season began airing a year later in August 2014, transitioning over to Disney XD, but again without any regularity to when new episodes would be first broadcast. The first nine episodes aired from August to November 2014, the following two in February and March 2015, the next eight from July to November 2015, and the finale aired in February 2016. According to Disney XD, as each episode took about six months of work to complete, they opted against stockpiling episodes to show weekly but instead take advantage of the serial nature of the show, broadcasting each episode as it was completed and making an event out of it. On April 2, 2018, reruns of the show started airing on Disney Channel, although reruns of the show still airs on Disney XD.