* Durarara!! has 3 seasons:
* Season 1 (2010): 24 episodes
* Season 2 (2014-2015): 12 episodes
* Season 3 (2016): 12 episodes
* Total episodes: 24 + 12 + 12 = 48 episodes
* Assume each episode is about 24 minutes long (average for anime)
* Total runtime: 48 episodes * 24 minutes/episode = 1152 minutes
* Convert to hours: 1152 minutes / 60 minutes/hour = 19.2 hours
Therefore, it would take approximately 19.2 hours to watch all episodes of Durarara!!.