Meetings & Global Events
- 08–12 September 2008: JENAM2008, New Challenges to European Astronomy. Wien, Austria.
- 15–16 January 2009: IYA2009 Opening Event. UNESCO, Paris, France.
- 19–23 January 2009: IAU Symposium 260: "The Rôle of Astronomy in Society and Culture". UNESCO, Paris, France.
- 2-5 April 2009: 100 Hours of Astronomy
- 20 -23 April 2009: European Week of Astronomy and Space Science, University of Hertfordshire, UK
- 03 - 14 August 2009: IAU`s XXVII General Assembly, Rio de Janeiro, Brazil
- 10 - 13 August 2009: Conference "Astronomy and Civilization", Budapest, Hungary
- 24 - 27 August 2009: Conference: Kepler's Heritage in the Space Age, Prague, Czech Republic
- 25 - 31 October 2009: The European Society for Astronomy in Culture 17th Annual Meeting, Alexandria, Egypt
- 9-10 January 2010: Astronomy Beyond 2009 - Closing Ceremony of the IYA2009
National Opening Ceremonies
- Republic of Korea: 15 January 2009
- Belgium: 16 January 2009
- Taiwan: 18 January
- Philippines: 19 January 2009
- Germany: 20 January 2009
- Brazil: 20-28 January 2009 (The opening events of IYA2009 in Brazil will take place in 50 different cities)
- Spain:
- 27 January 2009: Official Openning of IYA2009 (Madrid)
- 19 February 2009: Openning for the general public (Cuenca)
- Slovenia: 27 January 2009
- Malta: 27 January 2009
- Portugal: 31 January 2009
- Switzerland: 5 February
- Hong Kong: 7 February 2009
- Morocco: 14 February 2009
- Nicaragua: 12 February 2009
- Macedonia: 26 February 2009
- Argentina: 20 March 2009