January 6 (Keiō 3, 10th day of the 12th month)[2] – The restoration of the Imperial government was announced to the kuge. The year 1868 began as Keio 3, and did not become Meiji 1 until the 8th day of the 9th month of Keio 4, i.e., October 23; although retrospectively, it was quoted as the first year of the new era from 25 January onwards.
September 3 (Keiō 4, 17th day of the 7th month) – Emperor Meiji announces that the name of the city of Edo was being changed to Tokyo, or "eastern capital".
October 23 (Keiō 4/Meiji 1, 8th day of the 9th month)
The Japanese era name (nengō) is formally changed from Keiō to Meiji; and a general amnesty is granted. The adoption of the Meiji nengō was done retroactively to January 25, 1868 (Keiō 4/Meiji 1, 1st day of the 1st month).
Emperor Meiji travels to Tokyo and Edo castle became an imperial palace.