A Yazri Imperial Year, abbreviated Y.I.Y. is the Galactic Standard term for the designation of one year as measured under the auspices of the Yazri Empire. While sharing an identical period of 365 Standard Days with the Oloun Calendar, each Y.I.Y. year was also given a historical name reference (e.g. 0 Y.I.Y. is also known as the Year of Foundation). This custom fell out of common use in 24,722 Y.I.Y. as the Yazri Empire was dissolved upon the death of its last Imperatrix, Sayhedre - though some historians continue to use both the Oloun and Yazri Imperial calendars simultaneously out of a sense of racial pride.