| Year | Spring | Fall |
|---|---|---|
| 2022 | May 22-June 2 | TBD |
| Makhari Messe+Online (in JpGU 2022) | TBD | |
| 2021 | May 30-Jun 6 | Sept 13-17 |
| Online (in JpGU 2021) | Online | |
| 2020 | Jul 12-16 | Nov 27-29 |
| Online (in JpGU 2020) | Online | |
| 2019 | May 25-30 | Sep 25-29 |
| Makhari Messe (in JpGU 2019) | Toyama International Conference Center | |
| 2018 | May 20-24 | Sep 25-29 |
| Makhari Messe (in JpGU 2018) | Tokyo Univ. of Marine Science and Technology (Shinagawa) | |
| 2017 | May 20-25 | Oct 13-17 |
| Makhari Messe (in JpGU 2017) | Tohoku Univ. (Sendai) |