There is no privileged or even quantifiable position of simultaneity of non-shared light cones. “At the same time” is meaningless over such distances.
All of those answers are so bad and wrong. Dang.
Objective space and time does not exist. This question is like asking, “What color would a ball be if it were some color that doesn’t exist and cannot exist?” It’s just, fundamentally, a bad question. Intuition does not work here. It’s so easy to be wrong because most people rely on the intuitive answer, which is in fact not even close to accurate.
The top-voted answer is wildly incorrect and so is every other answer there. Asking about simultaneity in this case is asking a meaningless question with no answer at all.