I don't know exactly when vs I don't know when exactly

Both phrases are correct and commonly used in English. They have the same meaning but differ slightly in word order. The choice between them depends on personal preference or emphasis in the sentence.

Last updated: March 23, 2024

I don't know exactly when

This phrase is correct and commonly used in English.

This phrase is used to express uncertainty about the specific timing of an event or action, emphasizing the lack of precise knowledge.

Show examples from the web [+]

I don't know exactly when bad things started to happen, but it was pretty soon after we met.
When I tried to get in touch with her to ask if she herself had written it, she had already left on a trip and I don't know exactly when she will be coming back.
I don't know exactly when I'll be back.
Now, I don't know exactly when you intend to use this mirror, But you should know this.
I don't know exactly when I was supposed to preapprove it, you know?
I just don't know what exactly happened when the former King passed away.
I don't know exactly why I picked up the camera.
I don't know exactly how I've changed since that night.
I don't know exactly what I want.
I don't know exactly what's happening here.
I don't know exactly what it was about Liesel Meminger.
I don't know exactly but it must've been organised.
I don't know exactly where is my place.
Two or three billion, I don't know exactly.
I don't know exactly, but my guess - 75 and sunny.
Sharon, I don't know exactly how to broach this.
I don't know exactly what you did to make Richard trust you.
I don't know exactly what your problem is, but you best bring it, Fabray.
I don't know exactly at what time she's coming.
I don't know exactly what our father wanted him to be.

Alternatives:

I don't know exactly when it will happen.

I don't know when exactly

This phrase is correct and commonly used in English.

This phrase is also used to convey uncertainty about the timing of something, with a slight emphasis on the exact timing.

Show examples from the web [+]

I don't know exactly when I'll be back.
I don't know exactly when bad things started to happen, but it was pretty soon after we met.
Now, I don't know exactly when you intend to use this mirror, But you should know this.
I don't know exactly when I was supposed to preapprove it, you know?
When I tried to get in touch with her to ask if she herself had written it, she had already left on a trip and I don't know exactly when she will be coming back.
I don't know exactly why I picked up the camera.
I don't know exactly how I've changed since that night.
I don't know exactly what I want.
I don't know exactly what's happening here.
I don't know exactly what it was about Liesel Meminger.
I don't know exactly but it must've been organised.
I don't know exactly where is my place.
Two or three billion, I don't know exactly.
I don't know exactly, but my guess - 75 and sunny.
Sharon, I don't know exactly how to broach this.
I don't know exactly what you did to make Richard trust you.
I don't know exactly what your problem is, but you best bring it, Fabray.
I don't know exactly at what time she's coming.
I don't know exactly what our father wanted him to be.
Him, I don't know exactly what he does.

Alternatives:

I don't know when exactly the meeting is scheduled.

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I don't know exactly when vs I don't know when exactly