Not really Wednesday

Despite what it says at the top of my posting, in my head it simply isn't Wednesday. Until I've made a token effort at sleeping, it's still Tuesday. So which is right? The objective, 'scientific' recording of the passage of time, or somebody's subjective, experience-based perception of time? In one sense, time is a human construct, something that lets us chop experience up into neatly-labelled chunks in an attempt to make sense of it & give ourselves an illusion of control, so my version of it is as valid as anyone else's. But in another sense there's Time with a capital T, out there & requiring some kind of consensus - the kind of Time about which a colleague of mine once remarked, probably not originally, that it's "nature's way of making sure everything doesn't happen at once". That sort doesn't really allow for individual interpretation, does it? If the rest of the world agrees that it's Wednesday, then it would be arrogant of me to disagree, & I don't really do arrogant.
I do brandied pseudo-intellectual ramblings, though :-)