UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ˈdeɪ/US:USA pronunciation: IPA and respellingUSA pronuncation: IPA/deɪ/ ,USA pronunciation: respelling(dā)

WordReference Collins English Usage © 2020
A day is one of the seven twenty-four hour periods in a week.
The attack occurred six days ago.
Can you go any day of the week? What about Monday?
You also use day to refer to the time when it is light and when people are awake and doing things. When day has this meaning, you can use it either as a countable noun or an uncountable noun.
The days were dry and the nights were cold.
How many meetings do you have on a typical working day?
The festivities went on all day.
You refer to the actual day when you are speaking or writing as today.
I hope you're feeling better today.
I want to get to New York today.
Be careful
Don't use ‘this day’ to refer to the day when you are speaking or writing. Don't say, for example, ‘I want to get to New York this day’.
‘the other day’
You use the other day to show that something happened fairly recently.
We had lunch the other day at our favourite restaurant.
The other day, I got a phone call from Jack.
referring to a particular day
If you want to refer to a particular day when something happened or will happen, you usually use a prepositional phrase beginning with on.
We didn't catch any fish on the first day.
On the day after the race you should try to rest.
If you have already been talking about events that happened during a particular day, you can say that something else happened that day.
Then I took a bath, my second that day.
Later that day Amanda drove to Leeds.
You can also say that something had happened the day before or the previous day.
Kate had met him the day before.
My mobile had been stolen the previous day.
You can also say that something happened the next day or the following day.
The next day the revolution broke out.
We were due to meet Hamish the following day.
When you have been talking about a particular day in the future, you can say that something will happen the following day or the day after.
The board will meet tomorrow evening and the team will be named the following day.
I could come the day after.
‘every day’
If something happens regularly on each day, you say that it happens every day.
She went running every day in the summer.
Eat at least five portions of fruit and vegetables every day.
Be careful
Don't confuse every day with the adjective everyday.
‘these days’ and ‘nowadays’
You use these days or nowadays when you are talking about things that are happening now, in contrast to things that happened in the past.
These days, more women become managers.
Why don't we ever see Jim nowadays?
‘one day’
You use one day to say that something will happen at some time in the future.
Maybe he'll be Prime Minister one day.
I'll come back one day, I promise.
In stories, one day is used when a writer has just described a situation and is mentioning the first of a series of events.
One day a man called Carl came in to pay his electricity bill.
Days and dates
'day' also found in these entries:

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