LOL!

That's because your question is deliberately dishonestly running away from what's been shown about the word "firstborn" to another part of the verse -
and you don't even refer to that verse honestly or truthfully. Here is the proof:
We were discussing Col. 1:15.
We were discussing the term "firstborn" that is found in the verse.
The verse says that Christ is "the firstborn over all Creation."
You first tried to say that "firstborn" means "first-created".
You were shown and proven to be wrong. We can go over all the details of that again ANY time you like - I remind you again that
your own JW masters agree with me that the term refers to primacy, pre-eminence, and supremacy.
You have now tried to foist the idea that the verse refers to "the beginning of creation".
You have been shown and proven to be wrong about that as well. Again - In order to get to your view, you have to first have that view in mind, and then VERY deliberately and VERY dishonestly read your view into the text in order to force, twist, and pervert the text to your already held view.
And now you are asking, "When did all creation occur--In the beginning or when Jesus was born on earth?" The question is TOTALLY irrelevant, and here is why and how that's true: It VERY DISHONESTLY and DELIBERATELY IGNORES what the verse SAYS: Christ is "the Firstborn" - the Primary, Highest-Ranking, Pre-eminent, Supreme One - OVER all Creation." There is ONLY ONE Supreme One over all Creation, and that is God.
Thank you for the opportunity to clarify
even more about this!
It is now time again for you to run away to something else.