I want to know about Ayumi in Yokohama. (Opening of ports, birth of cities and wards, etc.)

The main events are introduced in a chronological table.

The opening of Yokohama Port (old calendar, June 2, 1859)
1889 (Meiji 22) Municipal organization enforcement (April 1)
The 50th anniversary festival of the opening of the port in 1909. Municipal emblem and city song establishment
1927 (Tsurumi Ward, Kanagawa Ward, Naka Ward, Hodogaya Ward, Isogo Ward) (October 1)
Born in Kohoku Ward Totsuka Ward in 1939 (April 1)
Born in Minami Ward in 1943 (December 1)
Born in Nishi Ward in 1944 (April 1)
Born in Kanazawa Ward in 1948 (May 15)
Became a government-designated city in 1956.
Born in Konan Ward, Asahi Ward, Midori Ward and Seya Ward in 1969 (October 1)
Born in Sakae Ward Izumi Ward in 1986 (November 3)
100th anniversary of municipal administration and 130th anniversary of opening of port in 1989, "Yokohama Expo" held
The birth of Aoba Ward Tsuzuki Ward   in 1994 (November 6)

Abbreviation of Ayumi in Yokohama City