You probably can't. You know the month, the year, the day of the week.
There is a clock on your wall or the dashboard of your car. You have a schedule, a calendar, a time for dinner or a movie.

Yet all around you, timekeeping is ignored. Birds are not late. A dog does not check its watch. Deer do not fret over passing birthdays.

Man alone measures time.
Man alone chimes the hour.
And, because of this, man alone suffers a paralyzing fear that no other creature endures.
A fear of time running out