
1) October observance
Found on
https://www.crosswordclues.com/clue/allantide

Allantide (Kalan Gwav, meaning first day of winter, or Nos Kalan Gwav, meaning eve of the first day of winter and Dy` Halan Gwav, meaning day of the first day of winter) is a Cornish festival that was traditionally celebrated on the night of 31st October, as well as the following day time, and known elsewhere as Hallowe`en. The festival itself s.....
Found on
http://en.wikipedia.org/wiki/Allantide
No exact match found.