It’s 1 past 9 (Alternative clock system).

21:01

It’s 1 past 9.

Correct answer

21:02

It’s 2 past 9.

Error: 1 minute later

21:13

It’s 13 past 9.

Error: read minutes starting from hour markings and adding minutes

12:45

It’s a quarter to 1.

Error: confuse hour and minute hands