Dates on the grid are guideposts. Ancient calendars, local seasons, and contemporary traditions differ; the linked sources explain what is attested and what is a modern choice.
Historical season · Autumn turning toward winter · dates vary
Winter Nights / Vetrnætr
A well attested winter opening season associated in later sources with offerings and remembrance.
Ynglinga saga refers to an offering toward winter. Álfablót and Dísablót are associated with this broader season in some sources and practices.