For all of us, all past must be what we could never return, then it means nothing, then when we talk of past thing, we usually rely on only recorded data or own memory with remiscence and needing to share it with the same memorized past thing.

At several each diffrent generation ones group, one is so younger highteen, and another is sixty as older middle aged generation one. Usually former is at the condition that past's length is at so shorter than future length, toward it, latter one is on the contrary at the condition past's length is loger than future length. This presumption means generally presumable probably data referring index. Nevertheless, that former younger one could die tomorrow, and latter older one could survive even to 128years old, then at this fact, finally younger one's future length must have become so shorter than his past, and older one's future length as at that time in question must have become consequently longer than his past already spent length. These indexes are just truly realized result. Necessarily former is the first index as entrance to the first moratoriuml, and the last final result is the first moratorium's result as the final idex. 
In other words, we have both generally presumable index and its driving schedule and future prospect and really realized finally concluded index, and between both two things, we necessarily have another typed index as mind picturing thing and really time's ongoing sequel giving thing in gap, this gap means our mind's necessary coordination to assimilate us to the reality. Necessarily reality has both picture on mind as suppositive reality with future's giving outputted facts in uncertainty and another one with really given sequel forcing facts in cetainty as conclusion.

Generally, we can define that scientific measurement stands at absolute unchangeable fixed truth as seen so deductively correct, that aspect holding view must ignore all uncertainty, because scientific measurement must be done only with past data we could measure.
However our actually surviving reality is never so, we must feel only now at each moment to really and certainly, and any future thing must be uncertain, and only already passed all done things must be included to past and that must be as long as we refer all recorded data and that recorded content is correct, these mean so certain.
Meanwhile, philosophy must rely one at least afterward modenized era, the most typical representative time theory advocate was John McTaggart Ellis McTaggart FBA (1866–1925) , either as the intepreter to Hegel. 
His achievement's explannation is omitted to leave each readers' spontanous reserch, at least he included the idea intepretation of now to his paper, by the way, any acientific measurement must have perfect lack at having intepretation to now as anytime we feel the most realizable and the most vividly realistic and the sole believable to us all.
Then, eventually any scientific data must be even at the absolute belief to what time itself could never stop and have been shredded nor deleted, the at scientific view, any past and any future thing must be treated as the even thing and that must have devoid to set now as the most credible actual and realistic index.
In other words, if we have the most trustworty index, it must be nothing but at anytime only now.  At least Werner Karl Heisenberg(1901-1976) must have had the supposition to that now present our view for his theory as Unschärferelation(German),  Uncertainty principle.

Triplism I try to claim must be the theory of past, future as intepreted to be -, +, only now is never standing to both sides, only it must transcends, otherwise only it must be anytime so independent and past and future must be anytime only pictured matters at mind, brain with a help of memory and imaginable supposition. 

We must never be able to return to the past, it must evidence that ime's going must be only one direction, it in terms of our habitual usage, only to future.
It must mean that time's going and direction must mean that it aims and heads for only unrisen or unrealized things ever all other time must naver have and that realizable landscape must be absolutely not ever apperered them, that must be first appearing thing only for that time as suppositive future moment from now of us.

Then, to some extent, its fact could suggest that time by itself or the manager to time's going could have some memory.

In other words, at our rundown, time's direction must function to make all risen, relized phenomenal matrters but immediately after being done, all these rising or realizing thing could be taken to turns as already dealt them, namely all must become just past. And only anyother happening and occering must be at consistently appearing modus ponens, and these serially recognizable landscape's shifting must be regarded as change of aspect or just time's proceeding's evidence. These sequently chained series could be the sole characterized universal landscape as being e.g. Heideggar called as Sein as German. 
In other words, universal landscape covers all, never yet, rised or relized all things, necessarily we each are never catch them all, just we personally observe or witness very partial limited aspect in this.

Upper discribed facts could be analyzes and summarized to the absolute truth that all these facts and truths must mean time or its manager must never be persistant in already set and risen things and ceaselessly it must make everything to be carried or brought next to next at no attaching intention, they just leave everything to each being as present things, time itself must n ever intervene, it only watches all and cut the date, only doing so.
And it has no acts to any set things or made things so directly, just watching all shifting with the power as each being has by itself. 

Then, necessarily, if we set triple value with past, present as now and future, we must have contradictory thing, it must be that we anytime have attaching emotion with anticipation, wishing, hoping, anxiety to on going things' condition and its sequel, and persistence. But time itself must never be so!
Then, past must be consistently completely nothing and rather it could be defined only being accompanied with our memory. It resembles imaginary number at mathematics. Because it means only at displayed meaning only on coordinate axes✽, and memory could be realized only at our mind and brain, but it could never be realized as really present things to now truly deployed reality. Anytime memory could be relized only at our mind and brain, and these things are all just imaginary with the function of hippocampus, and Amigdala. 
Generally memory picturing thing could be frequently relatively, comparatively focused only on the absent or deleted things to now another aspect realized thing and with each distinction and discernment with analysis with both past's aspect and now aspect, we get or catch the fact of changed thing as meant matter to be remebered or be at remiscent mind. 

However, any future prospect must never be so, in other words, we could get the truth so easily, universally that anytime what we can feel or confirm as being tangible to be accpted or subjectively accept by ourselves, all phenomena must be nothing but now present even it could be only reminiscence or memory mibilizing in our mind. 
Then, on the contrary, future could be just our making act by us as being so subjectively and spontanouesly. And it means our expectant and presumable own reacting preparation on our mind and that reacting means either doing along with time's shifting and it driving changes as ongoing aspect's transition.
(to be continued)

Jan. 4th. 2021

✽Added explanation; Usually what we can put the displaying on coordinate axes are Real number, then imaginary number (or Impossible or Imaginary quantity) means for knowing Real number, then, reminiscent mind means relatively arbitrary brain guiding comparison to the present presented matters or things. it means the discovery to changed condition. 
It resembles imaginary number's usage at caluculation. Remiscent picuture aspect must never be already present at truely realized now offering picutre at landscape or so we can easily confirm really, then its remiscent mind picturing matter could be similar with imaginary number, to it, Real number could be configurated at the coordinate axes' particular point. But to some extent, that arbitrary operation to put that index means similarity to our brain's dealing with outputted result at realization of displaying data, consequently contradictorily, it could mean either the nature imaginary number has, that intepretation could be possible. But that view must be another dimensioned explicable fact to us, either we could say.