It’s 28 past 8 (Official clock system).

20:28

It’s 28 past 8.

Correct answer

20:29

It’s 29 past 8.

Error: 1 minute later

20:08

It’s 8 past 8.

Error: read minutes starting from hour markings and adding minutes

18:40

It’s 20 to 7.

Error: confuse hour and minute hands