sentence correction

I prefer this:

What do you think would be the earliest time he would be able to leave for Los Angeles?

GPYWhat do you think would be the earliest time he would be able to leave for Los Angeles?

Thank you very much for your help. I like that too.

But is what I wrote correct in meaning and grammatical?

AnonymousBut is what I wrote correct in meaning and grammatical?

The meaning is clear, and I wouldn't say it was actually ungrammatical.

GPYThe meaning is clear, and I wouldn't say it was actually ungrammatical.

Thank you very much. Would 'day' also work in both sentences instead of 'time'?

Thanks again.

AnonymousWould 'day' also work in both sentences instead of 'time'?

Yes (obviously the meaning is not exactly the same). However, to me, "soonest day" if anything sounds slightly more off than "soonest time", i.e. I would be even more inclined to use "earliest day". People's perceptions of this may vary.

GPYYes (obviously the meaning is not exactly the same).

Yes.

GPY to me, "soonest day" if anything sounds slightly more off than "soonest time", i.e. I would be even more inclined to use "earliest day". People's perceptions of this may vary.

I agree that "earliest day" is better, and "soonest day" sounds off. But both 'what'

AnonymousBut both 'what' (although better) and 'when' at the beginning of the sentence would work, right?

Yes.

GPY AnonymousBut both 'what' (although better) and 'when' at the beginning of the sentence would work, right?Yes.

Thank you very much for all your help!