Skaro-year

The Skaro-year was the year as measured on the planet Skaro.

Every Skaro-year, all the Daleks in the Dalek City would convene and choose whether to reelect their two leaders, the Golden Dalek and Black Dalek Leader, as Emperor and Warlord respectively. The Golden Emperor remained unopposed until the Super-Skaro year in the 40th century, (COMIC: The Brain Tappers ) when all the Dalek Commanders returned from distant galaxies. (COMIC: The Secret of the Emperor)

Behind the scenes
According to the "Earth-Skaro Timescale" of Terry Nation's Dalek Annual 1976, a Dalek year is half the length of an Earth year; Earth year 1 (AD) is concurrent to Skaro year 7011.