UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ˈdjʊərɪŋ/US:USA pronunciation: IPA and respellingUSA pronuncation: IPA/ˈdʊrɪŋ, ˈdyʊr-/ ,USA pronunciation: respelling(dŏŏring, dyŏŏr-)

WordReference Collins English Usage © 2020
‘during’ and ‘in’
You use during or in to say that something happens continuously or often from the beginning to the end of a period of time.
We often get storms during the winter.
This music was popular in the 1960s.
In sentences like these, you can almost always use in instead of during. There is very little difference in meaning. When you use during, you are usually emphasizing that something is continuous or repeated.
➜ See in
You can also use during to say that something happens while an activity takes place.
I met a lot of celebrities during my years as a journalist.
During her visit, the Queen will also open the new hospital.
You can sometimes use in in sentences like these, but the meaning is not always the same. For example, ‘What did you do during the war?’ means ‘What did you do while the war was taking place?’, but ‘What did you do in the war?’ means ‘What part did you play in the war?’
single events
Both during and in can be used to say that a single event happened at some point in the course of a period of time.
He died during the night.
His father had died in the night.
She left Bengal during the spring of 1740.
Mr Tyrie left Hong Kong in June.
It is more common to use in in sentences like these. If you use during, you are usually emphasizing that you are not sure of the exact time when something happened.
Be careful
Don't use during to say how long something lasts. Don't say, for example, ‘I went to Wales during two weeks’. You say ‘I went to Wales for two weeks’.
➜ See for
'during' also found in these entries:

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