hreinsunardaganna
Hreinsunardaganna is a cultural observance described in Nordic-inspired folklore and speculative fiction that centers on purification, renewal, and communal rebuilding after winter. The term is typically treated as a compound from linguistic roots resembling hreinsa, meaning to cleanse, and daganna, meaning the days, referring to a sequence of days dedicated to cleansing activities and reflection. In some sources the name functions as a generic label for annual cleansing periods, while in others it denotes a specific festival with prescribed rituals.
Observance and practices vary by tradition, commonly lasting three to seven days, though longer versions appear
Origins and usage are not tied to a single historical source. Scholars and writers place the concept