| Year | Date | Events |
| 1936 | May 15 | Establishment of the Health Association (forerunner of MOA International) |
| 1947 | Feb. 11 | Inauguration of the Purifying Therapy Popularization Society |
| 1952 | June 15 | Opening of the Hakone Museum of Art (Hakone) |
| Sept. 15 | Establishment of the Tomei Art Preservation Society (forerunner of the Mokichi Okada Art and Culture Foundation) |
| 1953 | Dec. 1 | Inauguration of the Society to Popularize Nature Farming |
| 1980 | July 22 | Inauguration of MOA International (Washington, D.C., USA) |
| Dec. 22 | Establishment of the Toluca Ceramics School (Toluca, Mexico) |
| 1982 | Jan. 11 | Opening of the MOA Museum of Art (Atami) |
| Feb. 27 | Establishment of the MOA Arts and Culture Foundation |
| March 28 | Inauguration of the Nature Farming International Research Foundation (forerunner of MOA Nature Farming and Culture Foundation) |
| March 30 | Inauguration of the MOA Institute |
| Dec. 23 | Opening of Ôhito Farm (currently Ôhito Zuisenkyô) |
| 1984 | Sept. 28 | Colloquium on Values at St. Peter’s College, Oxford University (United Kingdom, Great Britain) |
| 1987 | Sept. 30 | Inauguration of Pacific Culture Center (Hawaii, USA) |
| 1988 | April 8 | Inauguration of MOA Los Angeles (Los Angeles, USA) |
| April 25 | Signing of the Collaboration Agreement with the Thailand Social Welfare Council |
| 1989 | Dec. 14 | Signing of the Collaboration Agreement on Research and Popularization of the Nature Farming Method with the Argentina National Agricultural Technique Research Institute (INTA) |
| March 18 | Inauguration of MOA Thailand |
| 1990 | April 9 | Inauguration of the International Aesthetic MOA Foundation (Taiwan) |
| July 20 | Catabal Music Festival held (Portugal) |
| Oct. 12 | World Sustainable Agricultural Association Conference (Hawaii, USA) |
| 1991 | June 14 | Inauguration of the MOA Health Science Foundation |
| Sept. 6 | Inauguration of WSAA (World Sustainable Agricultural Association) at the United Nations Headquarters (New York, USA) |
| 1992 | March 5 | Special Exhibit of the “Image of Nature” at the MOA Museum of Art |
| 1993 | May 30 | Inauguration of the International Holistic Medical Association (keynote lecture by Dr. Viktor Frankl) |
| June 25 | Signing of the Collaborative Agreement with the Portugal Rheumatism Research Institute |
| Sept. 16 | Signing of the Collaborative Agreement on Nature Farming Method with the Chile Ministry of Agriculture |
| 1994 | June 12 | Inauguration of the National Federation of MOA Nature Farming Method Local Cooperatives |
| 1995 | March 28 | Conference on Religion, Land, and Conservation (CRLC) |
| April 3 | Summit on Religion and Conservation at St. Peter’s College, Oxford University (United Kingdom, Great Britain) |
| April 29 | Second Session of Summit on Religion and Conservation (United Kingdom, Great Britain) |
| April 29 | Inauguration of Alliance of Religion and Conservation (ARC) |
| Aug. 26 | Signing of Collaboration Agreement on Research with Mahidol University (Thailand) |
| Sept. 12 | MOA Museum Masterpieces Traveling Exhibition (Chile) |
| Oct. 12 | MOA Museum Masterpieces Traveling Exhibition (Argentina) |
| 1996 | March 16 | Opening of MOA Okinawa Ogimi Farm |
| 1997 | April 23 | Signing of the Collaborative Agreement on Earth Environment and Conservation with Oxford University (United Kingdom, Great Britain) |
| 1998 | March 10 | Opening of the MOA Mexico Clinic (Mexico) |
| 1999 | March 3 | Holding Shimane Prefecture and MOA Cultural Exchange Society |
| May 24 | MOA Cultural Exchange “Japan Culture Fair” (Peru) |
| Nov. 20 | Opening of MOA Portugal Clinic (Portugal) |
| 2000 | July 20 | Opening of MOA Hokkaido Zuisenkyô Nayoro Farm |
| 2001 | July 16 | Opening of Tokyo Wellness Center |
| 2002 | Jan. 10 | Completion of Lopburi Zuisenkyô (Lopburi, Thailand) |
| Oct. 27 | Opening of the Life Science Art Academy (Lopburi, Thailand) |
| 2003 | Jan. 20 | Opening of the Peru Life Science Art Academy (Peru) |
| April 14 | Opening of Kanazawa Wellness Center |
| Oct. 18 | Opening of Okinawa Wellness Center |
| Nov. 2 | Opening of Buenos Aires Wellness Center (Argentina) |
| Dec. 8 | Opening of Los Angeles Wellness Center (USA) |
| 2004 | March 17 | Establishment of MOA International, limited liability intermediary corporation (forerunner of MOA International, general incorporated association) |
| Dec. 11 | Opening of Nagoya Wellness Center |
| 2005 | March 20 | Opening of Thailand Wellness Center |
| 2006 | May 8 | Opening of Oku-Atami Wellness Center |
| May 11 | Establishment of the Nitta Memorial Integrative Medicine Institute |
| 2007 | Feb. 20 | Signing of Collaborative Agreement on Developing People on Food and Agriculture with the Thailand Ministry of Education Special Education Department |
| May 26 | Opening of Sapporo Wellness Center (AKA MOA Art Hall Hokkaido) |
| Sept. 16 | Conference on Inauguration of MOA Promotion Society held (Taiwan) |
| Sept. 18 | Signing of Agreement on Education and Research on the Okada Health and Wellness Program with the Thailand Ministry of Health Alternative Medicine Division |
| 2009 | April 30 | Opening of the Okada Purifying Therapy Administration Room at the Sickle Cell Anemia Center of the Republic of Congo National Medical Institute |
| May 20 | Opening of the Kansai Wellness Center (AKA MOA Kansai Health Center) |
| | Inauguration of MOA International, general incorporated association |
| Sept. 19 | First Okada Health and Wellness Program Research Gathering (Shinagawa, Tokyo) |
| 2010 | May 15 | Opening of the New Building for Tokyo Wellness Center |
| Oct. 15 | First South Central America Okada Health and Wellness Program Research Symposium (Chile) |
| Nov. 6 | Second Okada Health and Wellness Program Research Gathering (Hiroshima) |
| Nov. 26 | Signing of Collaborative Agreement with Damnoen Saduak City Hospital (Thailand) |
| 2011 | May 13 | Signing of Collaborative Agreement on Healthy City and Family Building Project with Mairinke City (Brazil) |
| Sept. 17 | Third Okada Health and Wellness Program Research Gathering (Sendai) |
| Nov. 18 | First North America Okada Health and Wellness Program Research Forum held (Los Angeles, USA) |
| 2012 | July 21 | Fourth Okada Health and Wellness Program Research Gathering (Sendai) |
| Sept. 8 | Fourth Okada Health and Wellness Program Research Gathering (Sendai) |
| Nov. 22 | Opening of the Tohoku Wellness Center |
| 2013 | June 2 | Opening of the Shikoku Wellness Center |
| June 2 | Renewal opening of the Kanazawa Wellness Center |
| Oct. 4 | Opening of the MOA Hawaii Wellness Center (Hawaii, USA) |
| Nov. 16 | Fifth Okada Health and Wellness Program Research Gathering (Osaka) |
| 2014 | Sept. 13 | Sixth Okada Health and Wellness Program Research Gathering (Fukuoka) |
| 2015 | April 25 | International Symposium on Tomorrow’s Medicine and Community Enrichment (Tokyo) |
| April 26 | International Symposium on Tomorrow’s Medicine and Community Enrichment (Kyoto) |
| Oct. 10 | Symposium on Tomorrow’s Medicine and Community Enrichment (Sapporo) |
| Oct. 11 | Seventh Okada Health and Wellness Program Research Gathering (Sapporo) |
| Nov. 6 | Signing of Collaborative Agreement with Prince of Songkla University (Thailand) |
| 2016 | Oct. 15 | Symposium on Tomorrow’s Medicine and Community Enrichment (Kanazawa) |
| Oct. 16 | Eighth Okada Health and Wellness Program Research Gathering (Kanazawa) |
| 2017 | Sept. 16 | Symposium on Tomorrow’s Medicine and Community Enrichment (Nagoya) |
| Sept. 17 | Ninth Okada Health and Wellness Program Research Gathering (Nagoya) |
| 2018 | Sept. 3 | Signing of Collaborative Agreement on Okada Health and Wellness Program including Food and Agriculture with the Thailand Ministry of Education Special Education Department |
| Nov. 17 | Symposium on Tomorrow’s Medicine and Community Enrichment (Tokyo) |
| Nov. 18 | First Okada Health and Wellness Program Research Gathering (Tokyo) |
| 2019 | Nov. 10 | Symposium on Tomorrow’s Medicine and Community Enrichment (Takamatsu) |
| 2020 | Feb. 16 | Symposium on Tomorrow’s Medicine and Community Enrichment (Nagoya) |
| Dec. 5 | Symposium on Tomorrow’s Medicine and Community Enrichment (Okinawa) |
