It’s 1 to 4 (Official clock system).

03:59

It’s 1 to 4.

Correct answer

04:00

It’s 4 o’clock.

Error: 1 minute later

02:49

It’s 11 to 3.

Error: read minutes starting from hour markings and adding minutes

12:15

It’s a quarter past 12.

Error: confuse hour and minute hands