It’s 19 past 4 (Official clock system).

04:19

It’s 19 past 4.

Correct answer

04:18

It’s 18 past 4.

Error: 1 minute earlier

04:03

It’s 3 past 4.

Error: read minutes starting from hour markings and adding minutes

04:20

It’s 20 past 4.

Error: confuse hour and minute hands