Cycle
Deep underground, time can not be tracked by the movement of the sun, moon and stars and the people were left in the dark. At first water clocks were attempted to recreate time from the surface, but were found to be unreliable at best. A discovery by the miners in the First Age (Age of Tears) finally created a solution. A special fungas was discovered that seemed to change colors over time on a regular basis. It was called the Rainbow Fungus. After some study it was discovered that it cycled on a regular enough basis that it could be used to track time. From that point the fungus is grown on the buildings of the Lake Stratum and on the ceilings of the other Strata in order to track time. Time is divided and measured by the color of the fungus.The entire day is called a Cycle.
The Cycle
Early Blue,Blue,Late Blue
Blue/Green Blend
Early Green,Green,Late Green
Green/Yellow Blend
Early Yellow,Yellow,Late Yellow
Yellow/Orange Blend
Early Orange,Orange,Late Orange
Orange/Red Blend
Early Red,Red,Late Red
Red/Purple Blend
Early Purple,Purple,Late Purple
Purple/Blue Blend
Each Color Period is close to 3 hours long, while the blends are only about a half hour long. The day is actually about 21 hrs long for the city. Most people sleep during the Red, Purple and Blue Periods. The Periods are broken up into three parts. The Blend periods are usually used for transit and easier to arrange meetings. The light created by the fungus is not very bright and does very little to help vision. Most people have it grown in their houses and several "clocks" have been created to help track it.
This will later be used in conjunction with the Vale Calendar to track time throughout Crevice.

can't wait to play!