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I asked some Japanese and they said that 今日のうちに is practically useful but
今日の間に is impractical (never used).

Can anybody here give a confirmation about whether 今日の間に is really impractical
or not? Please also give me some examples.
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2016-01-29T14:58:21.130
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question
grammar
Is there any case in which we can use 今日の間に?
I think 今日の間に is rarely used but 今日中に is in common use.
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2016-01-29T16:34:49.920
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今日の間に(内に) sounds awkward to me. We say 今日中に in the same way as 明日中に、今月中に、昨年中に,
and don’t say 明日の間に、今月の間に、and rarely say 昨年(一昨年) の間に.

To me, “… のうちに” looks close to ‘in’ and ‘within’ in English, and “の間に” more
alike “during.”

We say ”今日中に仕事を片付ける - We will finish the work (within) today / by the end of
day," and rarely say ”今日の間に仕事を片付ける - We will finish the work during today.
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2016-01-29T22:40:55.327
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I actually do see and hear 「[今日]{きょう}の[間]{あいだ}に」 once in a while, if not very
often. It may not be as common or even "proper" as 「[今日中]{きょうじゅう}に」, but it
would be utterly incorrect to say that it is "never used" as your friends seem
to have stated.

In fact, I just happened to find out that 「今日の間に」 is used as the first
definition of 「今日中」 [in this online
dictionary](http://www.weblio.jp/content/%E4%BB%8A%E6%97%A5%E4%B8%AD).

It is not a phrase that I recommend that Japanese-learners use actively, but
it sure exists and it is a fact.
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2016-01-30T12:18:49.837
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answer