People (namely Kaito) oft poked fun at Hakuba for tracking time to the precise millisecond at any given moment, but only someone who kept track in a similar manner could understand the true dedication to precision it took. When tracing time precisely, the passage of said time tended to crawl. A single school day could pass like eternity, and where most students would enter a dazed state to pass the day more quickly, Hakuba was too committed to allow such an oversight.
So he counted the seconds, day after day, regardless of how positively boring it tended to make life.