XXVI WCN 2023
Montreal, Canada
October 15-19, 2023
XXIII WCN 2017
Kyoto, Japan
September 16 – 21 2017
XXII WCN 2015
Santiago, Chile
October 31 – November 5, 2015
XXI WCN 2013
Vienna, Austria
September 21 – 26, 2013
XX WCN 2011
Marrakesh, Morocco
November 12-17, 2011
XIX WCN 2009
Bangkok, Thailand
WCN 2005
Sydney, Australia
WCN 2001
London, United Kingdom
WCN 1997
Buenos Aires, Argentina
WCN 1993
Vancouver, Canada
WCN 1989
New Delhi, India
WCN 1985
Hamburg, Germany
WCN 1981
Kyoto, Japan
WCN 1977
Amsterdam, The Netherlands