It’s 1 past 8 (Alternative clock system).

20:01

It’s 1 past 8.

Correct answer

20:02

It’s 2 past 8.

Error: 1 minute later

20:13

It’s 13 past 8.

Error: read minutes starting from hour markings and adding minutes

12:40

It’s 20 to 1.

Error: confuse hour and minute hands