"Not in April, but in October."
Translation:Non in aprile, ma in ottobre.
Having a quick look down all the comments here tells me that there is a need to know certain elementary things which, incidentally, you would find in most text books on a given language; now I know that DL is free, and an extremely useful tool for acquiring an affinity with a language, but, as I mentioned above, there are obviously quite a few people who would like to know the answer to this query without having to hunt around for clues. If there is a readily available explanation on DL for the seemingly random use of 'in' vs 'da' with months, then I apologize. In the meantime I have a friend from Venice visiting today, and will ask her.