On the dot means exactly at the stated time: the bakery opens at six on the dot, not a minute later. In an invitation, it asks people not to be late: be outside the theatre at seven thirty on the dot. British speakers also say on the dot of midnight.
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at + time + on the dot; on the dot of + time (UK)
- The bakery opens at six on the dot, even on Sundays.
- Please be outside the theatre at seven thirty on the dot.
- On the dot of midnight, every light in the square went out.
What changed
First versionThe meeting started at nine in the dot.
RevisionThe meeting started at nine on the dot.
Time prepositions are hard to predict, and in can feel right for being inside the exact moment: in the dot. But the phrase is fixed: on the dot, usually right after the time, at nine on the dot. Another way to say it is at nine sharp.
At the latest means no later than: by nine at the latest, and earlier is fine. At nine on the dot means exactly at nine, not earlier and not later. On time simply means not late. For a rough time, say around nine.
Your turn
The bell rang at exactly noon: It rang at twelve ___ the dot.
Show the answer
on — The bell rang exactly at noon, so it's on the dot. In isn't part of the phrase.
Set a meeting for an exact time and explain why no one can be late, using on the dot.
Meet me at the gate at eight on the dot because the doors will open only briefly.
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