19 – 20 May, 2019

2019 HOD – San Francisco, USA

10 – 11 May, 2018

2007 HOD – Cebu, Philippines

18 – 19 May, 2017

2017 HOD – Taipei, Taiwan

12 – 13 May, 2016

2016 HOD – Colombo, Sri Lanka​

April, 2015​

2015 HOD – Bali, Indonesia

April, 2014

2014 HOD – Melbourne, Australia

9th – 10th April, 2013

2013 HOD – Kanazawa, Japan

April, 2012

2012 HOD – Hanoi, Vietnam

15 March 2010

2010 HOD – Brunei Darusalam

9th march

2009 HOD – India New Delhi