If you’re at the intersection of time and space, it means you are anywhere in spacetime: you exist, will exist, or have existed at some place in the universe. Yes, the “intersection of time and space” is all of spacetime, much like the “intersection of latitude and longitude” is the entire surface of the Earth because that’s the set of points for which both latitude and longitude are defined.
We can put the 4 axes of spacetime (𝑥-, 𝑦-, 𝑧-displacement* and time) anywhere we want to define a point 0 (𝑥=0 m, 𝑦=0 m, 𝑧=0 m, t=0 s) where they meet (and that’s symbolic too, graphs where axes don’t cross at 0 are common and often useful but sometimes purposefully misleading). This is probably what you meant. Astronomers might put it into the infinitesimal universe at the time of Big Bang (and align the space axes to the cosmic microwave background as time passes). Islam scholars might put it on 622-06-16 CE at Kaaba in Mecca. As far as GPS satellites are concerned, the zero point is 1980-01-06 00:00:00 UTC at the center of the WGS-84 ellipsoid (and the space axes are locked to the rotating Earth as time passes).
* Diagrams of spacetime are limited to 1 or 2 space axes because they exist as representations of the 4D concept in space (2D (𝑥𝑦), aka plane, or 3D (𝑥𝑦𝑧)) only.
If you’re at the intersection of time and space, it means you are anywhere in spacetime: you exist, will exist, or have existed at some place in the universe. Yes, the “intersection of time and space” is all of spacetime, much like the “intersection of latitude and longitude” is the entire surface of the Earth because that’s the set of points for which both latitude and longitude are defined.
We can put the 4 axes of spacetime (𝑥-, 𝑦-, 𝑧-displacement* and time) anywhere we want to define a point 0 (𝑥=0 m, 𝑦=0 m, 𝑧=0 m, t=0 s) where they meet (and that’s symbolic too, graphs where axes don’t cross at 0 are common and often useful but sometimes purposefully misleading). This is probably what you meant. Astronomers might put it into the infinitesimal universe at the time of Big Bang (and align the space axes to the cosmic microwave background as time passes). Islam scholars might put it on 622-06-16 CE at Kaaba in Mecca. As far as GPS satellites are concerned, the zero point is 1980-01-06 00:00:00 UTC at the center of the WGS-84 ellipsoid (and the space axes are locked to the rotating Earth as time passes).
* Diagrams of spacetime are limited to 1 or 2 space axes because they exist as representations of the 4D concept in space (2D (𝑥𝑦), aka plane, or 3D (𝑥𝑦𝑧)) only.
@ChaoticNeutralCzech could it have been simpler ??
You seem to conflate axes and the quantities they represent. Learn more about graphs.