Time as Quantity
Circular time is misleading
Perhaps we ought to visualise time as a precious commodity. Since the runaway success of mechanical timekeeping, we are almost conditioned to see time in a circular fashion, but perhaps this is misleading - after all, and as we know, time does march.
Perhaps as long ago as 1600 BC water clocks were used in Egypt and Babylon. Ancient Greeks called theirs, clepsydra - the water thief.
Below is a digital clepsydra for entertainment: after setting a start and end time, the level of the time beaker below declines in real-time, proportional to time remaining. If the time interval is longer than 15 minutes, you may not easily detect the movement - but it is happening, come back and check whenever you like. Monitor how much time there is remaining in your project. Put an end to procrastination.
Instructions for use
Enter a start and end date/time and a name for your interval. If you want to count from now, simply choose an end date/time. Your browser will then show a URL with your active time beaker. You may share this link with others.