How long must one live in alaksa to be called a sourdough?

In Alaska, the term "sourdough" traditionally refers to someone who has lived there for a year or more, particularly during the harsh winter months. This nickname is rooted in the state's history during the Gold Rush era, when sourdough bread was a staple among miners and settlers. While the exact duration can vary, the one-year mark is generally accepted as the threshold for being considered a sourdough.