Vinternatsbló<WBR>t/Haustbló<WBR>t/Winter’s Day, Norse (Viking/Ásatrú) In Norse mythology and Ásatrú, a blót is a sacred meal shared with the gods. Vinternatsbló<WBR>t, Vinternatsblot or Haustblót, is to bid Winter welcome. Today marks the beginning of the Winter season in the old European calendar and is a harvest/Autumn ceremony, along the lines of Michaelmas, the feast day of St Michael (September 29).