Look at these examples to see how we use at, in and on to talk about time.
At weekends, I love to go skiing.
In spring, the weather is warmer.
On Mondays, I work from home.
In the afternoon, I do activities.
On weekdays, I work until 12.
At 5 o'clock, I do two or three more hours of work.
Try this exercise to test your grammar.
- Grammar test 1
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Grammar A1-A2: Prepositions of time – 'at', 'in' and 'on': 1
Read the explanation to learn more.
Grammar explanation
We use the prepositions in, on or at to say when something happens.
at
We usually use at with clock times and mealtimes.
I get up at 6.30 a.m. and go for a run.
She doesn't like to leave the office at lunchtime.
We also use at with some specific phrases such as at the weekend and at night.
At the weekend, I can spend the days how I like.
We can also say on weekends or on the weekend. This is more common in American English.
We say at night when we mean all of the night. But we say in the night when we want to talk about a specific time during the night.
She's a nurse and she works at night.
The baby often wakes up in the night.
We use at with Christmas and other holidays that last several days.
The weather is very cold here at Christmas.
At Chinese New Year, many people go home to their families.
| clock times | at 6 o'clock at 9.30 at 13.00 |
|---|---|
| mealtimes and breaks | at breakfast time at lunchtime at dinner time at break time |
| other time phrases | at night at weekends/the weekend at Christmas/Easter |
in
We usually use in with parts of the day and longer periods of time such as months, seasons and years.
I usually relax in the evening.
In summer it's too hot to do anything.
I'm always really busy in December.
| parts of the day | in the morning/afternoon/evening |
|---|---|
| months | in January/February |
| seasons | in (the) spring/summer/autumn/winter |
| years, centuries, decades | in 2016 in the 21st century in the 80s |
| other time phrases | in the past in the future in the last few years/months/weeks/days |
on
We usually use on with days and dates.
On Fridays, I have a long lunch.
It's his birthday on 19 October.
| days | on Monday/Tuesday etc. on my birthday on New Year's Day |
|---|---|
| dates | on 30 July on the second of August |
Do this exercise to test your grammar again.
- Grammar test 2
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Grammar A1-A2: Prepositions of time – 'at', 'in' and 'on': 2
Hello I would like to ask about for/in
I was talking with my mentor about not being in a Theatre for at least three years the exact sentence was: "I haven't been to a Theatre in a long time" and afterward she corrected me that stead of in I should have used for. Would you mind explaining please?
Hello vosik121,
When the sentence is affirmative you can use only 'for':
However, when the sentence is negative both are possible:
In your example both 'in' and 'for' are possible.
Peter
The LearnEnglish Team
Hi, if I want to talk about certain kind of days, such as windy days or sunny days, which preposition should I use?
For example, ‘on windy days I feel funny’, or ‘in windy days I feel funny’?
I would instinctively use ‘on’, but I’d like to understand better.
Thanks in advance (:
Hello vantina,
Yes, you are right in thinking that we use 'on'. In general, if the word or phrase we're referring to has the word 'day' in it somewhere (e.g. 'windy days', 'holidays', 'Christmas Day', 'weekdays'), we use 'on'.
I hope that helps you make sense of it.
All the best,
Kirk
LearnEnglish team
Hello,
Why do we use "on" with "holidays"? "On" should be used with days and dates...If we follow the grammar rules, we should say "at holidays", which sounds wrong :) Thanks!
Hello Claire,
While what I'm about to say is probably not always true, in general we use 'at' + a holiday when we're talking about a holiday season. For example, 'at Christmas' can refer not just to Christmas Day, but the days surrounding it.
But there's a strong tendency to use 'on' with the word 'day', so we say 'on Christmas Day' (not 'at Christmas Day'). The same could be said of the word 'holiday', which has the word 'day' in it.
I hope that helps you make sense of it, but please also consider that what we call 'rules' are really just observations of the way native speakers have come to use the language over time.
All the best,
Kirk
LearnEnglish team
Thanks for the authority, I completely understand the usage of prepositions of time.
Which preposition must we use with this phrase ( Saturday lunchtime) ?
Hi enigma4ever25,
It should be "on", but it's quite common to drop the preposition too, e.g. I'll see you Saturday lunchtime.
I hope that helps!
Jonathan
LearnEnglish team
Hello, I have a sentence "I am completing competitive programming fundamental ... Coursera". What should I fill? In or at? Thank you