section_path: Divisions of time/Seasons/Zassetsu
section_name: Zassetsu
paragraph_text: Zassetsu
  
  Zassetsu (雑節) is a collective term for special seasonal days within the 24 sekki.
  
  Shanichi dates can vary by as much as 5 days. Chūgen has a fixed day. All other days can vary by one day.
  
  Many zassetsu days occur in multiple seasons:
  
  The term Setsubun (節分) originally referred to the eves of Risshun (立春, 315°, the beginning of Spring), Rikka (立夏, 45°, the beginning of Summer), Risshū (立秋, 135°, the beginning of Autumn), and Rittō (立冬, 225°, the beginning of Winter); however, it now only refers to the day before Risshun.