Calendar

The Cen calendar is based on the movements of Celsaria and Celsa. It was created over 40000 cel (Cen's equivalent of years) ago, an event known as the Derivation. Cel numbers reference the cel when the Derivation occured - cel numbers being either Derivation Minus (DM) or Derivation Plus (DP).

History and Development
The Derivation - the original invention of the Calendar and the concept of recording the pasage of time - occured in 0 DP, 40098 cel ago. Early civilization eventually found the need to express specific times of events in a precise manner, so a system of counting dots and lines spread across the region. The time it took for a day and a night to pass was taken as the first arbitrary unit of time, and then divided into pillars, strands and dots, so called because of their written symbols.

Time Denominations
A dot is of equal length to a second. 10 dots are known as a strand, the equivalent of minute but, of course, six times shorter. 100 strands constitute a pillar (analogous to an hour) of which there are 10 in a day and night. Celsaria spins on its axis at high speed, and so a day on Celsaria is around eight and a half times shorter than one on Earth, lasting a little over two and a half hours - or, indeed, ten pillars.

The time it takes for Celsaria to orbit its sun is known as a cel, and corresponds to a year. This period is almost exactly 315.5 Celsarian days. Therefore, cel alternate between being 'short' and 'long'; 315 and 316 days long respectively. Even cel numbers, for example DP 40000, are always short cel, whereas long cel have odd numbers. A cel is approximately one tenth the length of a year.