Procrastinator's Clock

The Procrastinator's Clock is guaranteed to be up to 15 minutes fast. However, it also speeds up and slows down in an unpredictable manner so you can't be sure how fast it really is. Technically, the clock maintains a "time buffer" of "fastness" measured in milliseconds. This buffer is modified every second by a certain amount, either adding or subtracting a number of milliseconds. Every once in a while, the delta value changes and the rate of change may increase or decrease. The time buffer is added to the actual time before the display calculations are made. Furthermore, the clock is guaranteed to not be slow, assuming your computer clock is synced with NTP.