

It’s as made up as time, but it’s as real as anything can be understood to be, with emphasis on ‘understood’. It doesn’t exist in actuality mostly because our words and models don’t describe it even close to well enough to consider the actual thing. It’s like a really poor translation of a word, it might get us closer to understanding what’s going on but will never be if your goal is to describe it to something like the human mind.
Well, technically the ‘now’ experiment only works one time. Of you exclude time as an assumption there isn’t another location to place previous or subsequent results.