XXVI WCN 2023

Montreal, Canada

October 13-19, 2023

XXIV WCN 2019

Dubai, United Arab Emirates

September 26 – 31 2019

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