The real time of the main shows

Actually, when u everwatch a 1/2 hour show, the show isn't actually 1/2 hour, let's just say:

Breaks :5 mins( all the commercals)
Starting song : 2 mins
Ending song :2 mins

30mins-5mins-2mins-2mins=21 mins

So actually, the main part of the show is only (let's just say) 21 mins only!!!

They actually lie to you when they said the show is 30 mins.(But if it is a movie, then they did not lie to you that it is 2 hours because there are no breaks or starting song!)