| Use | For | Examples |
|---|---|---|
| in | longer periods | in 2026, in March, in summer, in the morning, in two weeks |
| on | days and dates | on Monday, on 14 March, on Australia Day, on my birthday |
| at | exact times and short moments | at 9 am, at lunchtime, at night, at the moment |
Watch out
- On the weekend is normal in Australia and the US. British speakers often say at the weekend.
- No preposition before this, next, last, every: See you next Friday (not ~~on next Friday~~).
- In the morning / afternoon / evening, but at night.
Quick quiz
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Frequently asked questions
When do you use in, on and at for time?
At for times (at 7 pm), on for days and dates (on Monday), in for months, years and longer periods (in July).
When do you use in, on and at for places?
In for inside a space (in Sydney), on for surfaces and streets (on King Street), at for points (at the bus stop).
Is it 'on the weekend' or 'at the weekend'?
In Australia, people say 'on the weekend'.