| Date | Place | Events |
| October 1990 January |
Tokyo |
Japan Himalayan Adventure Trust (Japan) HAT-J established Mrs. Junko Tabei with the help of leading mountaineering organisations and individuals of Japan established Himalayan Adventure Trust (Japan) HAT-J as an independent Chapter of HAT. |
| 10-11 Nov 1991 |
Tokyo |
An International symposium on Conservation of the Mountain Environment Over 2000 delegates and invitees from all over the world attended. |
| 22-29 Aug 1992 |
Mt.Fuji and Tateyama,Japan. |
Cross-Cultural Mountain Conservation Youth Project-1992 |
| 1-9 Sep 1993 |
Mt.Soraku and Seoul,Korea |
Cross-Cultural Mountain Conservation Youth Project-1993 |
| 23-28 Aug 1994 |
Mt. Tomuraushi and Shintoku-Cho,Hokkaido, Japan. |
Cross-Cultural Mountain Conservation Youth Project-1994 |
| 23-27 Jun 1995 |
Tokyo |
Mt. Everest Womens summit 1995 HAT-J, as the main organiser, took part in this summit meeting which commemorated the 20th anniversary of the first climb of Mt. Everest by women. The participants were Pan Duo (CHN), Bachendri Pal (IND), Lydia Brandey (NZL), Gui Sang (CHN), Santosh Yadav ((IND), Ji Hyun Ok (KOR), Kim Soon Joo (KOR), Rebecca Stephens (GBR), Ginette Harrison (GBR), Junko Tabei (JPN) and Elizabeth Hawley, as the guest speaker. After the meeting in Tokyo they climbed Mt. Fuji with the general participants. |
| 20-27 Aug 1995 |
Mt.Changbai-shan and Beijing, China |
Cross-Cultural Mountain Conservation Youth Project-1995 |
| 27 Dec 1996 to4 Jan 1997 |
Annapurna and Kathmandu, Nepal |
Cross-Cultural Mountain Conservation Youth Project-1996 |
| 20-27 Aug 1997 |
Oze and Ura-bandai Japan |
Cross-Cultural Mountain Conservation Youth Project-1997(International Youth Forum in OZE) With Mrs. Junko Tabei as the chairperson, and Sir, Edmund Hillary as the honorable guest, 89 youth delegates from India, Nepal, China, Hong Kong, Taiwan, Buhtan, Korea Mongolia and Japan attended together with another HAT-J participants. They did terekking and camping in Oze and Urabandai to clean up and organised International Youth Forum on the environmental conservation of mountains in Oze.They concluded an resolution called OZE APPEAL |
| 22-29 Aug 1999 |
Ayubia N Park and Islamabad,Pakistan |
Cross-Cultural Mountain Conservation Youth Project-1999 |
| 22-30 Aug 2000 |
E peak of Snow Mt. and Taipei. Taiwan |
Cross-Cultural Mountain Conservation Youth Project-2000 |
| 24-29 Aug 2001 |
Matsumoto Kamikochi Mt.Kita-Hodaka Japan | Cross-Cultural Mountain Conservation Youth Project-2001 |
| 26-30 Dec 2003 |
Hong Kong | Cross-Cultural Mountain Conservation Youth Project-2003 |
| 25-29 Aug 2004 |
Kazakhstan | Cross-Cultural Mountain Conservation Youth Project-2004 |
| 23-28 Aug 2005 |
Mt. Fuji and Tokyo Japan | 55 youth delegates from India, Nepal, China, Buhtan, Pakistan, Kazakhstan, Hong Kong, Mongolia, Bangladiesh, Switzerland Japan and Taiwan attended together with another HAT-J participants. They trekkings Mt.Fuji , and organised an international symposium on the environmental conservation of mountains in Mt. Fuji |
| 16-25 Aug 2006 |
Valley of Flower and Hemkyund Sahib India | 30 youth delegates Pakistan, Japan and India . They climbed Valley of Flower(3500m), Hemkyund Sahib(4329m) , and organised an international symposium on the environmental conservation of India(ATOAI) |