[질문] 그다음시간은몇시에차가잇나요

[이어서]08:20,09:00,09:30,10:00,10:30,11:00,11:30,12:00,12:40,13:20,14:00,14:40,15:20,16:00,16:30,17:00,17:30,18:00,18:30,19:00,19:40,20:20,21:00,