Inspired by What is the longest aired episode of a TV series?, what is the TV series that has the longest total screentime (duration of all episodes of all seasons taken together)?
I mean series with a plot, no news, talks, sport, game shows and screentime shall exclude commercial breaks. The series must either have been aired somewhere or must have been otherwise buyable (on DVD, ...). Comic/animation or soap operas series are okay.
For example, Law & Order:Special Victims Unit has 20 seasons with 458 episodes and each episode about 40-44 minutes running time, making the total screentime about ~13.3 days, but I actually cannot find the exact total running time.
Doctor Who has 851 episodes but the run time per episode varied strongly and the total runtime of Dr. Who is about 17 days.