It’s 24 past 8 (Official clock system).

08:24

It’s 24 past 8.

Correct answer

08:23

It’s 23 past 8.

Error: 1 minute earlier

08:04

It’s 4 past 8.

Error: read minutes starting from hour markings and adding minutes

05:40

It’s 20 to 6.

Error: confuse hour and minute hands