Revolution Day or the Day of the Revolution refers to public holidays or remembrance days in various country held in commemoration of an important event in the country's history, usually the starting point or a turning point in a revolution that led to significant political change.

The leap day in the French Republican Calendar, in use for several years after the French Revolution, added after a franciade, is also known as "Revolution Day" (Jour de la Révolution or Fête de la Révolution in French). See Sansculottides for details.

Navratri, Navaratri, or Navarathri (Hindi: नवरात्रि; Gujarati: નવરાત્રી; Tamil: நவராத்திரி; Sanskrit: नवरात्रम्; Marathi: नवरात्र; Punjabi: ਨਰਾਤੇ Nepali: नवरात्रि; Bengali: নবরাত্রি; Kannada: ನವರಾತ್ರಿ; Telugu: దుర్గా నవరాత్రులు; Malayalam: നവരാത്രി; Tulu: ನವರಾತ್ರಿ/നവരാത്രി) is a Hindu festival of worship of Shakti and dance & festivities. The word Navaratri literally means nine nights in Sanskrit, nava meaning nine and ratri meaning nights^[2]. During these nine nights and ten days, nine forms of Shakti/Devi are worshiped. The 10th day is commonly referred to as Vijayadashami or Dussehra.

The beginning of spring and the beginning of autumn are two very important junctions of climatic and solar influence. These two periods are taken as sacred opportunities for the worship of the Divine Mother. The dates of the festival are determined according to the lunar calendar.