It’s 23 past 3 (Official clock system).

15:23

It’s 23 past 3.

Correct answer

15:24

It’s 24 past 3.

Error: 1 minute later

15:07

It’s 7 past 3.

Error: read minutes starting from hour markings and adding minutes

17:15

It’s a quarter past 5.

Error: confuse hour and minute hands