It’s 9 p.m..

21:00

It’s 9 p.m..

Correct answer

21:00

It’s 9 o’clock.

Error: read full hour with 0 minutes past

21:00

It’s 9 o’clock.

Error: read hours as a factor of 10

21:00

It’s 9 o’clock.

Error: read hours as a factor of 100