at (some time) sharp

At an exact time, with the emphasis that one must not be late. We need to leave for the airport at 8 AM sharp tomorrow morning. Please be here at 6:30 sharp.

Common Names:

Name	Pronounced	Usage
Xiomara	-	Spanish
Beitris	-	Scottish
Pranav	-	Indian, Hindi, Marathi, Gujarati
Angelique	-	Dutch
Annabel	AN-ə-bel (English)	English, Dutch
Bond	[bɔnd]