For myself, keeping track of time gets no more attention than how many pair of socks might be in my drawer: I always assume there are some, and then I am quite surprised when I do occasionally find their spot empty. Maybe once or twice per month I will discover I have either "lost" or even somehow "gained" a day or two, and it is not uncommon for me to look at the clock and realize several hours have past where I would have guessed only an hour or two.