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*Ansei 1/12/9 (Jan 26) The [[USS Powhatan|USS ''Powhatan'']] returns to [[Shimoda]] with the ratification instruments for the [[Convention of Kanagawa]], signed the previous year.
*Ansei 1/12/9 (Jan 26) The [[USS Powhatan|USS ''Powhatan'']] returns to [[Shimoda]] with the ratification instruments for the [[Convention of Kanagawa]], signed the previous year.
*Ansei 1/12/21 (Feb 7) [[Treaty of Shimoda]] signed between Russia and Japan.
*Ansei 1/12/21 (Feb 7) [[Treaty of Shimoda]] signed between Russia and Japan.
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*1855/1/5 (Feb 21) Commander Adams of the ''Powhatan'' and Japanese representatives exchange ratified copies of the Convention of Kanagawa, completing the agreement process, and the ''Powhatan'' departs Japan the following day.
*1855/1/21 (March 9) The [[Treaty of Amity (Ryukyu-US)|Ryûkyû-USA Treaty of Amity]] is ratified by the US Congress and officially announced by President Franklin Pierce.
*1855/1/21 (March 9) The [[Treaty of Amity (Ryukyu-US)|Ryûkyû-USA Treaty of Amity]] is ratified by the US Congress and officially announced by President Franklin Pierce.
*1855/10 French ships call at Ryûkyû.
*1855/10 French ships call at Ryûkyû.