SunClock

SunClock is a novel clock that displays the time since sunrise for a given location. Some people believe this is a far more natural way of measuring time - each day starts at 00:00:00 at sunrise and time is counted from that point until the following sunrise. During spring days are slightly less that 24 hrs long as the sun rises "earlier" each day, and during autumn each day will last longer than 24 hrs. Seconds are still used as the heartbeat, and for convenience attention spans or minutes of 60 seconds and hours of 60 minutes are still used as intermediate measures. The problem with resetting the clocks at midnight is that there is no way to determine it by direct obeservation - you have to observe midday and count heartbeats from then to start the new day. Sunrise is directly observable.