Öinä
Öinä is a term used in folklore studies and in speculative fiction to denote a set of nocturnal practices and performances associated with the longest nights. The word is described as deriving from a hypothetical Finnic root ö- meaning night and a plural suffix -inä, and it is used in scholarly discussions to refer to a family of ritual events rather than a single fixed tradition.
Practices attributed to öinä vary by region but commonly center on communal gatherings during winter nights.
Historical development: The concept appears in 19th-century regional folklore collections and has since been revived in
See also: Night, Solstice, Lantern festival, Folklore studies.