time is relative, we know this by now. but did you know that human perception of time alters as one ages?
i'm sure you noticed this, but probably got skeptic about it and assumed that it is something wrong with your perception. well, no! almost everyone's perception of time changes as they age. let me elaborate:
 do you remember as a kid, classes in the elementary school felt like eons and the summer holiday like eternity? in university a term passed like the  blink of an eye?
it appears that this is disproportional. the less time we have (the older we are and closer to death) it seems to flow faster and faster—that bastard! sad, but true.
now i understand when old people sometimes say "i remember it as if it was yesterday".  probably after 60, weeks doesn't matter you timestamp significant events by months...oh, the horror!
however, remember that time is still time! 1 hour is 1 hour! (on earth, i am assuming you don't travel close to lightspeed)
the human brain is a motherfucker. it is wired in complex and totally fucked up ways and it still takes account to primordial stuff. although it evolves, it still inherits primordial shit (like when you feel that you are falling down in a dream, you wake up. this is because your ancestors were butt-naked monkeys fucking around on treetops). maybe this time perspective thing is something alike. who the fuck knows?
so the lesson we've learnt here today kids: you think your brain obeys you and you can assume manual control, you are naive. the brain is an automatic fucker just works as it is design to.