Space is alone confusing. Calculating physics in a 5 dimensional simulation requires 5 variables per dimension. That's 25 different variables. Now imagine, those variables multiplying per every instance of time since the Big Bang to whatever future our race may hold. Lot to take in at once so we use rounding (calculating approximate results). As of now, we haven't yet discovered the smallest instance of time. Second? Micro-Second? Nano-Second? To first understand the smallest thing, you must understand how we can get to it.
Detailed explanation of why rounding is necessary and why we will always have an approximate answer :
From start of time, our first unit of time was a "day". Later evolved into months, being (28 at conditions..) 30-31 days. Then years, being 12 months. We create variables (units of time). A day has 24 hours. Day being the variable. A hour has 60 minutes; hour being the variable here now. Since day one, to calculate anything, we needed a base of understanding.. coming as "day" for time and everything was based of that. So even if we calculated a unit smaller than second, there would be a unit smaller than that, and a unit smaller than that. In such a case, we could go searching but to no end.
That is why a rounding principle was invented; One-third may be approximately 0.3, but could very well be approximately 0.33, and approximately 0.3333333333333 and so on. No matter how far we go, we'll still end on an approximate answer.
So lets set up our variables on how space positioning works.
Our position variable can be conducted via gravity and weight.
w = mg m(type) = kg or g (kilogram or gram) g = net force of all pulls of gravity g(type) = newton w(type) = solution(type) or newton
The variable "g" needs to include as many vectors as possible for the best location pointing. Vectors can be the gravity from the sun, other near stars and planets, even black holes. Even so, there will be a difference of possible 200 to 400 (km^5).
Our time variable can be be found from comparison with multiple events that every multiverse (works if we are a multiverse) will have (such as BIG BANG event or a black hole formation that can't be stopped). I'll give a formula for this soon after I consider how to get the nearest result (any events that are guaranteed to occur for human race will be helpful in comments below).
If you can pin point an exact position in time nearest to even 20 (unit of time travel ^ 25), you should be considered a genius smarter than any the world has seen (in my opinion).
The above position variable only works still objects. If an object is moving, you'll need to calculate all forces being applied at same time as transportation. Yes, that is very hard and such calculations can even crash a Quantum Computer so I'm still trying to figure out how to make this easy.
Time isn't linear. The assumption of a "timeline" is idiotic. Time is so far away from being linear. If anything, time would be a 25 Dimensional Space.
Any corrections always help. Suggest some!