SMOKA account registered before 31 March 2026 **will** be expired on 31 March 2026. Please register again via Online User Registration **on and after** 09:00 (JST) or 00:00 (UT) on April 1, 2026 , if you wish to continue using SMOKA after April 2026. (March 3, 2026)

SMOKA data request service will be suspended from 16:00 on March 31 to 09:00 on April 01, 2026 (JST), due to the renewal of SMOKA account.
We would appreciate your understanding and cooperation. (March 23, 2026)