Oclock

about four o'clock

At the sound of the last tone it will be 9 o’clock

at three o'clock sharp

five o’clock shadow

He arrived on the … o’clock train.

I arrived at … o’clock.

I came at two o'clock sharp.

I have an appointment at 3 o’clock with

I should be finished by four o'clock.

It is ... o’clock by my watch.

It is about ... o’clock.

It's already 11 o'clock.

It’s eleven o’clock, and not a soul about

On my watch, it's two o'clock.

She arrived on the … o’clock train.