Why is the 24hr clock named '24 hr' when it never shows 24:00?

24hr Play 24hr Garage Girls on SoundCloud and discover followers on SoundCloud

穿上真的像沒穿的無感內衣24小時穿著都不覺得是種負擔  sbo24hr Sri Chinmoy 6-12-24-Hr & 24-Hr Teams Race: am Sat 11 May 2024; A short introduction briefing will be held about 5 minutes before the start Headsets