It’s 29 past 6 (Official clock system).

18:29

It’s 29 past 6.

Correct answer

18:28

It’s 28 past 6.

Error: 1 minute earlier

18:05

It’s 5 past 6.

Error: read minutes starting from hour markings and adding minutes

18:30

It’s half past 6.

Error: confuse hour and minute hands