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Ayumi abbreviation chronological table of Yokohama-shi

Annual Item
Last earthenware vessel, Jomon period
Before approximately 20,000-2,400 year

Last earthenware vessel, Jomon period is the time before farming still plays a key role of life, Trace that activity of people of last earthenware vessel latter period is the first is seen in the remains of Asahi Ward arrow finger valley in Yokohama city limits. In addition, large vestiges of a colony called circular village such as Tsuzuki Ward   outermost outworks remains are left for middle part of Jomon period, and the working of life of people is known.

Yayoi period
Before approximately 2,400-1,700 year

Yayoi period is the time when full-scale rice field rice growing and use of hardware began. Village of farming group performing rice growing in Isogo Ward three buildings of the Imperial Court stand remains or Otsuka, Tsuzuki-ku, saishodoiato is run.

The ancient times
Christian era about 300 - 1192 (Kenkyu 3)

With Burial Mound age when old burial mound was made for local chief who acquired power in the ancient times, We pass in Nara, the Heian era when nation based on law called legal codes was made.

The oldest letter historical materials about city limits, In narrow strip of wood with message written down with "50 Morooka" discovered in Asuka, we hit Hisayoshi county Morooka back town. In the ancient times, city limits are organized around Tsuzuki county, Hisayoshi county of Musashi country, "Manyoshu tanka collection" Various burdens were imposed on people including soldiers garrisoned at strategic posts in Kyushu who looked like this. The remains of Chojabaru of Aoba Ward are traces of government office (county house) of ancient Tsuzuki county. After the tenth century, eastern country becomes base producing samurais, but remains which are related to city limits including the remains of Tsuzuki, Nishinoya that produced parts of armor are discovered.

The Middle Ages
From 1193 (Kenkyu 3) to 1590 (Tensho 18)

The Middle Ages is the time when fight was repeated by samurai who came to have power newly.

As accumulation place of supplies that Mutsuura of Kanazawa Ward supports city Kamakura in the Middle Ages when the samurai family government is formed in Kamakura, Many people including merchant and craftsman gathered from the countries and showed great turnout. In addition, Buddhism culture not to be inferior to Kamakura around designation name temples prospered.

The Edo era
From 1590 (Tensho 18) to 1859 (Ansei 6)

The early modern times are the times when stable society followed led by the Edo Shogunate.

Villages more than approximately 200 or villages exist in Yokohama of the Edo era, Most were Shogunate territory and headquarters of a shogun territory, but Musashi Kanazawa feudal clan (Yonekura) is formed in 1721 (Kyoho 6). In addition, Tozuka accommodation was true in 1604 (Keicho 9), and Kanagawa accommodation and Hodogaya accommodation played a key role of local economy, culture as post town of Tokaido in 1601 (Keicho 6).

1854 (Ansei 1) We conclude the Convention of Kanagawa (Kanagawa treaty).
1858 (Ansei 5) We conclude Osamu enthusiast trade agreement in Japan and the U.S.
1859 (Ansei 6) Yokohama is performed the opening of a port (old calendar June 2) of.
1859 (Ansei 6) Tax office is put to reception place trace.
1859 (Ansei 6) There is Yokohama-machi (5 or town).
1862 (Bunkyu 2) The Namamugi Incident happens.
1868 (Meiji 1) Yokohama court (Kanagawa) is put.
1869 (Meiji 2) Electric wire is spread between Yokohama candlestick government office, courts (the beginning of telegraphic communication).
1869 (Meiji 2) Yoshidabashi Bridge becomes iron bridge (the beginning of iron bridge).
1870 (Meiji 3) The Yokohama Mainichi Shimbun (our country's first daily publication 英語 newspaper) is launched.
1872 (Meiji 5) Railroad is opened between Shimbashi, Yokohama.
1873 (Meiji 6) Yokohama merchant establishes seishiaratamekaisha.
1874 (Meiji 7) Perfection Clinic (forerunner of Yokohama City Univ. Hospital) is done.
1878 (Meiji 11) We promulgate the township municipalities organization method. First biggest ward becomes wide Hamaku independently from Hisayoshi Funato county, and Yokohama Director General has jurisdiction.
1880 (Meiji 13) Yokohama ready money bank is established in Honcho.
1880 (Meiji 13) Yokohama commercial law assembly hall (current Yokohama Chamber of Commerce and Industry) is established.
1881 (Meiji 14) We establish Yokohama alliance raw silk load checkroom.
1887 (Meiji 20) Water supply under prefectural management is done, and water supply from Mt. Noge storing water ground to city begins.
April, 1889 (Meiji 22) Yokohama can scold municipal organization (a population of 116,193 people, area 5.40 km2).
1890 (Meiji 23) Yokohama trade newspaper is launched.
1890 (Meiji 23) Water supply becomes run by city.
1890 (Meiji 23) Yokohama combination light company fires light for the first time.
1891 (Meiji 24) Perfection Clinic becomes run by city.
1892 (Meiji 25) The gas station becomes run by city.
1894 (Meiji 27) 3 fire defense organizations of Ise Saki, Ishikawa, Yamate are established.
1894 (Meiji 27) Yokohama Port iron Bridge (University bridge of the present) is completed.
1895 (Meiji 28) Silk quality control house is established.
1895 (Meiji 28) The Yokohama Board of Trade (reincarnation of Yokohama commercial law assembly hall) is established.
1899 (Meiji 32) Settlement is abolished by treaty revision.
1901 (Meiji 34) The first city limits expansion (a population of 299,202 people, area 24.80km2).
1904 (Meiji 37) Yokohama electric railroad (streetcar in the back), Kanagawa, Oebashi Bridge interval are opened.
1906 (Meiji 39) Honmoku Sankei-en Garden is released.
1908 (Meiji 41) Yokohama railroad, Higashikanagawa, Hachioji interval (current JR Yokohama Line) do completion.
1909 (Meiji 42) Memorial festival is held for opening of a port 50 years. We establish song of municipal emblem, city.
1911 (Meiji 44) City hall new Government building is completed.
1911 (Meiji 44) The second city limits expansion (a population of 444,039 people, area 36.71km2)
1917 (Taisho 6) Opening of a port memory Yokohama Hall is opened.
1919 (Taisho 8) We are destroyed by fire with fire, 8 or town, 3, 248 houses from Chitose-cho (big fire of *ji).
1919 (Taisho 8) We put up city planning around major road.
1921 (Taisho 10) Streetcar becomes run by city.
1923 (Taisho 12) We suffer big damage by the Great Kanto Earthquake.
1926 (Taisho 15) Nogeyama Park is opened.
1927 (Showa 2) The third city limits expansion (a population of 529,300 people, area 133.88km2).
1927 (Showa 2) It enforces constituency system. Tsurumi, Kanagawa, average, Hodogaya, Isogo Ward is born.
1928 (Showa 3) Municipal bus starts a business (7 lines, 30.2km).
1930 (Showa 5) Yamashita Park is opened.
1931 (Showa 6) We establish the Yokohama-shi Central Wholesale Market.
1935 (Showa 10) Revival memory Yokohama University exhibition is held.
1936 (Showa 11) The fourth city limits expansion (a population of 738,400 people, area 168.02km2).
1937 (Showa 12) The fifth city limits expansion (a population of 759,700 people, area 173.18km2).
1939 (Showa 14) The sixth city limits expansion (a population of 866,200 people, area 400.97km2).
April, 1939 (Showa 14) Kohoku, Totsuka Ward is born.
1941 (Showa 16) We enter into the Pacific War.
December, 1943 (Showa 18) A part of the Naka Ward becomes Minami Ward.
April, 1944 (Showa 19) A part of the Naka Ward becomes Nishi Ward.
City Counsil relocates the city hall to steel reinforced concrete school buildings such as Oimatu national elementary schools to library.
May, 1945 (Showa 20) Yokohama blitzkrieg, 4 6% of city area are damaged.
August, 1945 (Showa 20) We receive Potsdam Declaration, and Japan surrenders.
1945 (Showa 20) Land (9,180,000m2), building (960,000m2) is requisitioned around center, harbor of city.
November, 1946 (Showa 21) The Constitution of Japan is promulgated. The May 3, 22 enforcement.
April, 1947 (Showa 22) Local Government Act is enforced. Mayor election by popular vote is held.
May, 1948 (Showa 23) A part of the Isogo Ward becomes Kanazawa Ward.
1949 (Showa 24) We hold trade exhibition in Japan in Noge, Tammachi.
1950 (Showa 25) The Yokohama international port city construction method is promulgated.
1950 (Showa 25) City hall moves to trade Expo Tammachi venue trace.
1951 (Showa 26) Right of management of Yokohama Port moves from country to city.
1952 (Showa 27) Large san bridge becomes derequisition.
1953 (Showa 28) All the first and festival are held, and international costume parade is carried out.
1956 (Showa 31) It becomes ordinance-designated city.
1958 (Showa 33) Memorial festival is held for opening of a port 100 years.
1959 (Showa 34) The current city hall is completed.
1961 (Showa 36) Marine Tower starts a business. Daikokucho frontage landfill is completed.
1962 (Showa 37) Harbor View Park (Minato-no-Mieru Oka Koen), Yokohama Culture Gymnasium is completed.
1964 (Showa 39) Negishi Line (Sakuragicho, Isogo interval) is opened.
1964 (Showa 39) The Tokaido Shinkansen is opened, and there is Shin-Yokohama Station.
1965 (Showa 40) We announce "design of future plan of the making of city of Yokohama".
1967 (Showa 42) Landfill of Gulf of Hirakata is completed.
1968 (Showa 43) We start construction of municipal subway (Kamiooka, Kannai interval).
1968 (Showa 43) Population of city breaks through 2 million people (the national third place).
October, 1969 (Showa 44) By reorganization of administrative section, Seya Ward is born from green, Tozuka from Asahi, Kohoku from Konan, Hodogaya from the south and becomes 14 wards.
1969 (Showa 44) Honmoku citizen Park is born.
1970 (Showa 45) We start Kohoku new subdivision construction work.
1970 (Showa 45) Negishi Line (Isogo, Yokodai interval) is opened.
1971 (Showa 46) We start Kanazawa frontage reclaiming work.
1972 (Showa 47) We start business of municipal subway (Kamiooka, Ise Saki Chojamachi interval).
1972 (Showa 47) We abolish streetcar, all the trolley-buses.
1973 (Showa 48) We devise index for "Yokohama-shi comprehensive plan 1985" and the first five years based on "Yokohama-shi basics design".
1973 (Showa 48) The Negishi Line whole line (Yokodai, big boat interval) is opened.
1974 (Showa 49) The second Asia table tennis championship is held.
1974 (Showa 49) Inhabitant of a ward meeting is born in each ward.
1974 (Showa 49) We break through a population of 2,500,000 people.
1976 (Showa 51) Municipal subway (Kaminagaya, Yokohama interval) is opened.
1977 (Showa 52) We devise index for new (the second) five years.
1978 (Showa 53) Population of city reaches 2,729,433 and becomes the second place in the whole country.
1978 (Showa 53) Odori Park , Yokohama Stadium are completed.
1979 (Showa 54) Yokohama city air terminal (YCAT) starts a business.
1980 (Showa 55) We start Yokohama bay bridge construction work.
1981 (Showa 56) We devise "yokohama 21st century plan".
1981 (Showa 56) We devise "yokohama 21st century plan first execution plan" (1981-1985).
1982 (Showa 57) "United Nations Asia Pacific city meeting" is held.
1983 (Showa 58) We launch "Minato Mirai 21 business".
1984 (Showa 59) The Yokohama child Hall of Science opens.
1984 (Showa 59) We start Kanazawa Seaside Line construction.
1985 (Showa 60) We devise "yokohama 21st century plan second execution plan".
1985 (Showa 60) Municipal subway (Maioka, Shin-Yokohama interval) is opened.
1985 (Showa 60) Population of city surpasses 3 million people.
1985 (Showa 60) Sailing boat "Nippon-Maru" is released.
November, 1986 (Showa 61) Honor, Izumi Ward is born from Totsuka Ward.
1986 (Showa 61) Yokohama Doll Museum opens. Kannnai Hall opens.
1987 (Showa 62) The modern water supply 100th anniversary, the water supply Memorial open.
1987 (Showa 62) Municipal subway (Maioka, Tozuka interval) is opened.
1987 (Showa 62) We are authorized by United Nations "peace messenger" (apostle of peace).
1988 (Showa 63) Business area event of the 100th anniversary of the municipal administration is held in each ward.
1988 (Showa 63) Yokohama woman forum is opened.
1989 (Heisei 1) Ceremony of the 130th anniversary of the opening of a port of the 100th anniversary of the municipal administration is held.
From March 25, 1989 (Heisei 1) to October 1 Yokohama exhibition is held in Minato Mirai 21 district.
1989 (Heisei 1) New traffic Kanazawa Seaside Line (Shinsugita, Kanazawahakkei interval) is opened.
1989 (Heisei 1) We establish "rose" as flower of city.
1989 (Heisei 1) Yokohama bay bridge is opened.
1990 (Heisei 2) "yokohama 21st century plan third execution plan" (1990-1994) begins.
July, 1991 (Heisei 3) Yokohama international peace conference room is completed in 2, Minato Mirai 1 district.
August, 1991 (Heisei 3) United Nations peace messenger city meeting is held in Yokohama international peace conference room.
1992 (Heisei 4) Construction of Kanazawa nature park is completed.
1993 (Heisei 5) "Yokohama economically independent urban zone basics design" gets approval of country.
1993 (Heisei 5) Municipal subway Route 3 (Shin-Yokohama, thistle Noma) is opened.
1993 (Heisei 5) Hakkeijima, Yokohama opens.
1993 (Heisei 5) We devise new comprehensive plan "yumehama 2 0 1 0 plan" (long-term vision).
April, 1994 (Heisei 6) Municipal Central Library opens entirely.
May, 1994 (Heisei 6) United Nations disaster prevention world meeting is held in Pacifico-yokohama.
August, 1994 (Heisei 6) The tenth International AIDS Conference is held in Pacifico-yokohama.
November, 1994 (Heisei 6) By reorganization of administrative section, green leaves, Tsuzuki Ward   is born from Kohoku, Midori Ward and becomes 18 wards.
January, 1995 (Heisei 7) Yokohama-shi history Museum opens.
1995 (Heisei 7) We devise "yumehama 2010 plan business plan".
June, 1996 (Heisei 8) Yokohama Noh-theater is opened.
October, 1996 (Heisei 8) The seventh international refuse meeting is held in Pacifico-yokohama.
1997 (Heisei 9) We devise "yumehama 2010 plan Five-Year Plan" (1997-2001).
November, 1997 (Heisei 9) Cooperation network meeting - between city net 97 Yokohama - Asia Pacific cities is held in Minato Mirai 21 district.
March, 1998 (Heisei 10) Yokohama International Stadium opens.
May, 1998 (Heisei 10) Yokohama Minato Mirai Hall opens.
July, 1998 (Heisei 10) Yokohama international pool opens.
April, 1999 (Heisei 11) yokohama Zoo (ZOORASIA) is opened.
August, 1999 (Heisei 11) Yokohama Stroke & Brain Center opens a Diet session.
August, 1999 (Heisei 11) Municipal subway (Tozuka, Shonandai interval) is opened.
September, 1999 (Heisei 11) Yokohama World Porters opens.
January, 2000 (Heisei 12) Citizen's general medical center attached to the City University medical department opens a Diet session.
October, 2000 (Heisei 12) Yokohama Media and Communications Center opens.
From September, 2001 (Heisei 13) to October "Yokohama Triennale 2001" is held.
April, 2002 (Heisei 14) Akarengasoko opens.
June, 2002 (Heisei 14) 2002FIFA World Cup climax is held in Yokohama International Stadium.
May, 2002 (Heisei 14) Yokohama International Passenger Terminal opens.
October, 2002 (Heisei 14) Population surpasses 3,500,000 people.
March, 2002 (Heisei 15) Museum of Yokohama Urban History, Yokohama Museum of EurAsian Cultures open.
February, 2004 (Heisei 16) The Minato Mirai Line opening of business.
2005 (Heisei 17) The first station reorganization (the 17.18 year) in 34 years
2005 (Heisei 17) "Yokohama Triennale 2005" is held (from September to December).
June, 2006 (Heisei 18) We devise "Yokohama-shi basics design" (long-term vision).
December, 2006 (Heisei 18) We devise "Yokohama-shi Middle plan".
March, 2008 (Heisei 20) Municipal subway Green Line (Nakayama, Hiyoshi interval) is opened.
May, 2008 (Heisei 20) "The fourth Tokyo International Conference on African Development" is held.
2008 (Heisei 20) "Yokohama Triennale 2008" is held (from September to November).
2009 (Heisei 21) Foundation of a country Expo Y150 is held (from April to September).
November, 2010 (Heisei 22) "APEC (Asia-Pacific Economic Cooperation) summit meeting" is held.
December, 2010 (Heisei 22) We devise "Yokohama-shi middle 4 ka age plan" (2010-2013).
2011 (Heisei 23) "Yokohama Triennale 2011" is held (from August to November).
2012 (Heisei 24) DanceDanceDance@YOKOHAMA2012 is held. (from July to October)
June, 2013 (Heisei 25) "The fifth Tokyo International Conference on African Development" is held.


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