About the passing of time

I scribbled this thought on a scrap of paper while on a train journey,
looking through the window.

FROM THE PRESENT TO THE PAST VIA THE FUTURE

It is sometimes said that 'time marches on',
but does it actually march
or does it rather slide, unnoticed, past the events of our daily lives.

All of a sudden, seemingly,
what was huge and all-consuming 
in the present moment
is in the past.

Was that 
a year,
two years,
ten years ago,
we say?

Yes, it was;
and here we are now, in today.