Past Observances
- Celebration of World Philosophy Day 2011
- Celebration of World Philosophy Day 2010
- An international celebration of World Philosophy Day 2009
- World Philosophy Day, 20 November 2008
- World Philosophy Day 2007, 15 November 2007
- World Philosophy Day 2006, 16 November 2006
- Philosophy Day at UNESCO, 18 November 2004
- Philosophy Day at UNESCO, 20 November 2003
- Philosophy Day at UNESCO, 21 November 2002