Orbit represents time by directing light through an acrylic light guide onto the rear face of a white opaque acrylic disc. This Light Guide Clock (LGC) tells time to the nearest 5 minutes using a red dot to represent the minutes and a blue dot to represent the hour. Once every hour, when the 5 minute dot and 1 hour dot share the same position on the clock face, a single dot of soft purple appears for 5 minutes. An interesting feature of the clock is that between midnight and 1:00 am the clock face has only one dot of light, red, that displays time to the nearest five minutes. When viewed from the side one can see how acrylic rods guide light from LEDs placed on a PCB in the back of the clock. The entire clock "mechanism" was designed in a modular fashion to enable "mass production" and to permit the clock mechanism to be readily installed in other case designs that have the identical receptacle for the plug in module.