This sense of temporal perspectivality is quite independent from whatever the special theory of relativity has to say about time, empirically, except for the manner in which it defines the three regions of the agent-centered light-cone at each instant: limiting possible intervention, or unintended causal influence, to the events located within the "future" region of the light-cone.
On the other hand is the assertion that humans experience of duration is unique in experiencing not physical processes like clocks or anything else physical, but of the advancement of this "ontologically real" present. This would elevate it to an empirical claim, and despite being untested, would seem to be complete nonsense.
In the transition between phenomenological space/time and physical space/time, I think it's quite common - and this is in broad strokes - to make one a derivative of the other. Kant's view on space is a phenomenological one:
Space is not an empirical concept which has been derived from outer experiences. For in order that certain sensations be referred to something outside me (that is, to something in another region of space from that in which I find myself), and similarly in order that I may be able to represent them as outside and alongside one another, and accordingly as not only different but as in different places, the representation of space must already underlie them. Therefore, the representation of space cannot be obtained through experience from the relations of outer appearance; this outer experience is itself possible at all only through that representation. — Kant, CoPR, Transcendental Aesthetic
and time is, again very roughly speaking, an a-priori structure which gives us our index of
consecutiveness of experiences.
In the same regard, Heidegger's view of space - however different in character - makes physical space (and time) derivatives of various
existentialia (roughly, 'fundamental properties of experience')
For example, an entity is ‘near by’ if it is readily available for some such activity, and ‘far away’ if it is not, whatever physical distances may be involved. Given the Dasein-world relationship highlighted above, the implication (drawn explicitly by Heidegger, see Being and Time 22: 136) is that the spatiality distinctive of equipmental entities, and thus of the world, is not equivalent to physical, Cartesian space. Equipmental space is a matter of pragmatically determined regions of functional places, defined by Dasein-centred totalities of involvements (e.g., an office with places for the computers, the photocopier, and so on—places that are defined by the way in which they make these equipmental entities available in the right sort of way for skilled activity). For Heidegger, physical, Cartesian space is possible as something meaningful for Dasein only because Dasein has de-severance as one of its existential characteristics. — SEP, Martin Heidegger, Spatiality
De-severance functions as a spatial
ising structure in which relevant objects for my activity are 'nearby for me' and irrelevant objects are 'distant from me'. Heidegger argues at length that the Cartesian conception of space - still present in special and general relativity, they are modern forms of Cartesian coordinate systems; real valued vector spaces - as a field of orthogonal extensions, and my place in it as a point, is derivative from this more primordial spatiality of my experience.
Time, also, is treated as derivative of the
orientation of experience. Orientation, again roughly, has the component of futurity - my plans, what I will do next; the component of the present - my engagement with what I'm doing; and the component of the past - what needed to happen to be doing what I'm doing now. It should be noted that these elements work by structuring how I'm doing what I'm doing, and 'the experiential moment' is
dispersed and elongated with respect to the futural,present and past aspects of Heidegger's phenomenological time. If you want to read more on this, the terms are 'fallenness', 'thrownness' and 'projection'.
Obversely, it is possible to imagine human experiential time and space as derivatives of physical time and space. The Circadian rhythm being coupled to the sun and the differences between neurotransmitter activity in the brain, the sense of fatigue from mental and physical exertions giving some sort of inner clock coupled with the one we obtain from day and night (or more generally light level). We could say that experiential time is an illusion projected from the the non-relativistic speed of our day to day activities.
I'd like to say at this point that I don't think either of these approaches gives much respect to the particularities of the derivative space/time concept. Accounts of phenomenological space/time are good at describing phenomenological time, science of physical space/time is good at describing physical space/time.
I think the following is a worthwhile question:
In what senses is our phenomenological space/time related to physical space/time? Deriving one from the other has a few problems:
(experiential allows derivation of physical) -> vulnerability to arche-fossils
(physical allows derivation of experiential) -> hard to give an account of differences between the two. (eg, flow-states and time perception)
The discussion so far as highlighted three connected ideas which act as a conceptual bridge between physical space/time and experiential space/time, namely:
(1) Time-like separation between events in Earthly reference frames is prerequisite for maintaining the order of cause and effect. This is a bit of an imprecise formulation but I think it suggests the right idea. Stuff has to be moving slowly, stuff has to be close on a cosmic scale, in order for us to get the real properties we have out of physical time accounts which use relativity.
(2) Light-cones as partitions between causally connected components of space-time.
(3) Limiting theorems of SR and GR reduce their dynamics to typical Earthly ones for most processes, so SR and GR can be incorporated in an ontology of space time.
Ever since I read a reasonable amount of Heidegger, and then Meillassoux' criticism of (experiential->physical) time derivations, I've thought it would be an interesting question to ask:
How do humans internalise physical space and time?
How do experiential space/time allow us to act in a universe with a space/time alien to our own? An operational question, rather than casting one space/time as logically prior to another.