Common Year

The term 'Common Year' is used to describe the period of time between the fall of the first human dynasties, and the beginning of the Imperium in CY 5437. The fall of the Nikian rebels in 5437 marked the start of the Constellar Imperium, and the beginning of a new counting: the Imperial year, or IY. Some planets mark their own time, as well as noting the IY--a year as it is on Hammon.

Sometimes, the Imperial Year is referred to as a 'standard year', usually when speaking generally about the length of time something takes. Similarly, 'standard month', 'standard day', and 'standard hour' are equal to the length of time each is on Hammon. Starships use the Standard timekeeping system, thanks to a system that remains consistent with the master clock on Hammon.