The Rise and Fall of the Galactic Empire was published in 35 ABY per the reasoning here and describes the in-universe Skywalker: A Family at War as a currently incomplete project. As the out-of-universe Skywalker: A Family at War confirms that the work was eventually completed, the biography must have been released at some point after The Rise and Fall of the Galactic Empire.
Usage
{{SkywalkerFamilyAtWarDate}}