in or on vacation?

A question, which started me to wonder, which is the correct way to ask it…

But I feel it is both OK to ask, except they have a different meaning!?

1.person A:What did you do in winter vacation? person B:…answer…
2.person A:What did you do on winter vacation? person B:…answer…

1 sounds like a question specified to a timeframe (the time that the person had winter vacation)…

2 sounds like person A, knows or pretends, person B had been ON vacation somewhere, and would like to know what he did at That place.

is this correct?
thanks in Advance

I don’t think your explanations are valid. It is a matter of whether the speaker is thinking of a length of time (1) or a single event (2). However, neither preposition sounds right to me; I would use ‘during’.

Hi Mister Micawber,
thanks again for helping me.

How would you ask this type of question?
just: What did you do during winter vacation?

you would use the words IN or ON here?

IN sounds more the specific time, as ON sounds more at a specific place, isnt it?
And if you think person B has been ON vacation somewhere…
how would you ask this question? still …during winter vacation?

Thanks again!

I’m going on a vacation.

What did you do during the winter/summer/spring vacation?

No. I thought that I made that clear in my first post.

Ok, but when I google “On vacation” many websites come up… so I thought at least someway I can use On vacation… thats why I asked it again…
because it looks On vacation is official English.

Sorry, I can’t answer you-- I’m on vacation now.

Thank you for answering.

I will use from now on the question: what did you do during winter vacation?

I hope I won`t forget that anymore!
other clarifications, and examples are still welcome!
Regards