right at 4/ on the dot of 4/ at 4 sharp/exactly at 4/ punctually 4 /just at 4/on the

[vil]

Dear teachers,

Would you be kind enough to tell me whether the following sentences sound well in your natural language?

Right at 4 o’clock the captain’s voice came over the loud speaker.
On the dot of 4 the captain nade an announcement.
At 4 o’clock sharp the captain made an announcement.
Exactly at 4 o’clock the captain made an announcement.
Punctually 4 o’clock the captain made an announcement.
Just at 4 o’clock the captain made an announcement.
On the strike of 4 o’clock the captain made an announcement.

Thank you for your efforts.

Regards,

V

[Ouisch]

Most natural-sounding phrases:

Right on the stroke of four o'clock
At four o'clock sharp
At four o'clock on the dot
Exactly at four o'clock