A Clock Watcher loses track of time

Where did the time go?

I count the seconds,
watching
as the digital display counts the minutes.

Noiselessly
the digits march in formation,
one followed by two,
followed by three
followed by...
I look away
distracted
by a shadow passing
through the room.

I look back at the clock,
ten,
fifteen,
thirty minutes have slipped away;
dropped
into the abyss
of forgetfulness.

Where are they?
What happened to those lost minutes,
those irretrievable seconds
that slid out of my grasp,
when
my sense of time
was derailed.