18,780 before the Battle of Yavin (BBY) was a year in the Galactic Republic's Great Manifest Period. The era, having begun more than 1,000 years earlier, featured growth and settlement out from the Core Worlds and into the Wild Space areas "east" of the galactic center. On the Core planet of Shawken, an iconic edifice that reached low-orbit altitude in the atmosphere was destroyed. The building was later rebuilt, and its construction and destruction were honored by the historian Vicendi nearly 9,000 years later.