In reality, time and space exist in you; you do not exist in them. They are modes of perception, but they are not the only ones. Time and space are like words written on paper; the paper is real, the words merely a convention.
Discard all you are not and go ever deeper.
Just as a man digging a well discards what is not water ... so must you discard what is not your own, till nothing is left which you can disown.
You will find that what is left is nothing which the mind can hook on to. You are not even a human being.
You just are - a point of awareness, co-extensive with time and space and beyond both, the ultimate cause, itself uncaused.
If you ask me “Who are you?”, my answer would be: “Nothing in particular. Yet, I am.”