It’s 21 past 1 (Official clock system).

01:21

It’s 21 past 1.

Correct answer

01:22

It’s 22 past 1.

Error: 1 minute later

01:05

It’s 5 past 1.

Error: read minutes starting from hour markings and adding minutes

04:05

It’s 5 past 4.

Error: confuse hour and minute hands