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History

1920 Aug. 29 Establishment of the Tokyo Underground Railway Company
1925 Sep. 27 Start of construction on the section between Asakusa and Ueno by the Tokyo Underground Railway Company 
1927 Dec. 30  Tokyo Underground Railway Company - opening of the first subway section between Asakusa and Ueno
1934 Jun. 21 Tokyo Underground Railway Company - opening of the section between Ginza and Shimbashi
1939 Sep. 16 Start of reciprocal through-service between Asakusa on the Tokyo Underground Railway Company Line and Shibuya on the Tokyo Rapid Railway Company
1941 Jul. 4 Establishment of the Teito Rapid Transit Authority (TRTA)
1951 Apr. 20 Construction of the Marunouchi Line section between Ikebukuro and Shinjuku begins
1954 Jan. 20 Opening of the Ikebukuro to Ochanomizu section of the Marunouchi Line
1959 Mar. 15  Opening of the Kasumigaseki to Shinjuku section of the Marunouchi Line (Completed the Ikebukuro to Shinjuku section of the Marunouchi Line)
1960 Mar. 1 Establishment of the new TRTA logo ()
1961 Mar. 28 Opening of the Minami-senju to Naka-okachimachi section of the Hibiya Line
1962 Mar. 23 Opening of the Nakano-fujimicho to Honancho section of the Ogikubo Line (Completed the Shinjuku to Ogikubo section of the Ogikubo Line)
May. 31 Opening of the Kita-senju to Minami-senju section and the Naka-okachimachi to Ningyocho section of the Hibiya Line Start of reciprocal through-service with the Tobu Isesaki Line (to Kita-koshigaya)
1964 Aug. 29 Opening of the Higashi-ginza to Kasumigaseki section of the Hibiya Line (Completed the Kita-senju to Naka-meguro section of the Hibiya Line)
Start of reciprocal through-service with the Tokyu Toyoko Line (to Hiyoshi)
Nishi-ginza Station on the Marunouchi Line was renamed Ginza Station
Dec. 23 Opening of the Takadanobaba to Kudanshita section of the Tozai Line
1966 Oct. 1 Start of reciprocal through-service with the Tozai Line and the Chuo Line (to Ogikubo)
1969 Mar. 29 Opening of the Toyocho and Nishi-funabashi section of the Tozai Line (Completed the Nakano to Nishi-funabashi section of the Tozai Line)
Apr. 8 Start of reciprocal through-service between Mitaka on the Chuo Line and Tsudanuma on the Sobu Line via the Tozai Line
Dec. 20 Opening of the Kita-senju to Otemachi section of the Chiyoda Line
TRTA's operating kilometerage exceeds 100km
1971 Apr. 20 Opening of the Ayase to Kita-senju section of the Chiyoda Line
Start of reciprocal through-service with the Joban Line (to Abiko)
1974 Oct. 30 Opening of the Ikebukuro to Ginza-itchome section of the Yurakucho Line
1978 Feb. 28 A tornado blows a Tozai Line train traveling on a bridge over the Arakawa and Nakagawa Rivers off the tracks (two carriages are overturned and one carriage is derailed)
Mar. 31 Opening of the Yoyogi-koen to Yoyogi-uehara section of the Chiyoda Line (Completed the Ayase to Yoyogi-uehara section of the Chiyoda Line)
Start of reciprocal through-service with the Odakyu Odawara Line (to Hon-atsugi)
Opening of the Shibuya to Aoyama-itchome section of the Hanzomon Line
Aug. 1 Start of reciprocal through-service with the Tokyu Shin-tamagawa Line (to Futako-tamagawaen)
1979 Dec. 20 Opening of the Ayase to Kita-ayase section of the Chiyoda Line
1986 Jul. 12  Opening of the Subway Museum
1987 Aug. 25 Opening of the Wakoshi to Eidan-narimasu section of the Yurakucho Line
Start of reciprocal through-service with the Tobu Tojo Line (to Kawagoe-shi)
1988 Jan. 1 Prohibition of smoking on all station premises
Jun. 8 Yurakucho Line between Shintomicho and Shin-kiba starts operations (completing the Yurakucho Line between Wakoshi and Shin-kiba Stations)
Nov. 22 Station shop "METROPIA No.1" opened at Ueno Station
1991 Nov. 29 Opening of the Komagome to Akabane-iwabuchi section of the Namboku Line
1995 Mar. 20 "Subway Sarin Gas Attack" on the Marunouchi, Hibiya and Chiyoda Lines
1996 Apr. 27 Start of reciprocal through-service with the Toyo Kosoku Line (to Toyo-katsutadai)
1998 Mar. 26 Start of reciprocal through-service with the Yurakucho Line and the Seibu Ikebukuro Line (to Hanno)
1999 Jan. 25 Licence recieved to construct Line No.13 between Ikebukuro and Shibuya (8.9km)
2000 Mar. 8 Train derailment and collision occurred at Naka-meguro Station on the Hibiya Line
Sep. 26 Opening of the Meguro to Tameike-sanno section of the Namboku Line (Completed the Meguro to Akabane-iwabuchi section of the Namboku Line)
Start of reciprocal through-service with the Tokyu Meguro Line (to Musashi-kosugi)
Oct. 14 Introduction of "PASSNET" (the common pre-paid card system)
2001 Mar. 28 Start of reciprocal through-service with the Namboku Line and the Saitama Railway Line (to Urawa-misono)
2002 Mar. 23 Began one-person operation between Kita-ayase and Ayase on the Chiyoda Line
Dec. 18 The special company law was promulgated and enforced (Law 188)
2003 Mar. 19 Opening of the Suitengumae to Oshiage section of the Hanzomon Line (Completed the Shibuya to Oshiage section of the Hanzomon Line)
Start of reciprocal through-service with the Tobu Nikko Lines (to Minami-kurihashi)
2004 Apr. 1 Birth of Tokyo Metro Co., Ltd.
Establishment of the Customer Relations Center
Service Managers assigned to the Ginza, Ueno, and Nihombashi Stations
Oct. 20 Tokyo Metro begins providing wireless LAN service at its stations
2005 Dec. 2 Opening of "Echika OMOTESANDO" at Omote-sando Station
2007 Feb. 3 Service commences on our new credit card, the Tokyo Metro To Me CARD
Mar. 18 PASMO, a rechargeable stored value IC card, is launched and interoperability with Suica made possible
May. 8 Tokyo Metro is awarded an official "mark of approval" as a family friendly employer
2008 Mar. 15 Romance Car MSE express service is extended directly onto the Chiyoda Line
Jun. 14 Opening of Fukutoshin Line (Wakoshi-Shibuya)
Oct. 14 The civil engineering structures of the Ginza Line (Asakusa Station to Shimbashi Station section) are certified as "Outstanding Civil Engineering Heritage”
2009 Feb. 6 The Ginza Line is certified as an "Industrial Modernization Heritage" site
Mar. 26 Opening of "Echika IKEBUKURO" at Ikebukuro Station
Oct. 1 Tokyo Metro commences the broadcast of advertisements using its Station Vision digital signage on the platforms of six major stations on the Marunouchi Line
Nov. 27 Opening of the new "Esola IKEBUKURO" commercial building in Ikebukuro Nishiguchi (West Exit)
2011 May. 24 The Chiyoda Line Series 16000 car is awarded the Laurel Prize
May.30 The Tokyo Metro official smart phone app "Tokyo Metro App" is released
2012 Mar. 1 Service commences on our new credit card, the ANA To Me CARD PASMO (Sorachika Card)
2013 Feb. 25 Tokyo Metro, in partnership with Japan International Consultants for Transportation Co., wins a project to assist with strengthening the regulatory regime and organizing operations management on the urban railway in Hanoi, Vietnam
Mar. 5 Tokyo Metro starts providing service updates through its official Twitter account
Mar. 16 Start of reciprocal through-service between the Fukutoshin Line and the Tokyu Toyoko and Yokohama Express Minato Mirai Lines (to MotomachiChukagai Station)
Transferring at Kudanshita Station is streamlined
Two additional stations (Iwamotocho and Akihabara) are designated as transfer point
Ticket gate access is provided to users of other lines at Kasuga, Korakuen, and Ichigaya Stations
Mar. 21 Cell phones can now be used on all Tokyo Metro lines (with service to become available between Kotake-mukaihara and Senkawa Stations on the Yurakucho and Fukutoshin Lines some time in FY 2016)
Mar. 23 PASMO, the rechargeable stored value IC card becomes usable throughout Japan
Apr. 15 Tokyo Metro commences the broadcast of advertisements using its Metro Concourse Vision digital signage in stations
May. 28 The Ginza Line's series 1000 train wins the Blue Ribbon Award
2014 Feb. 18 Tokyo Metro signs a Memorandum of Understanding on Friendship and Cooperation with Hanoi Metropolitan Railway Management Board, Vietnam
Apr. 1 Tenth anniversary of the establishment of Tokyo Metro Co.,Ltd.
Nov. 27 Tokyo Metro opens a "plant factory" underneath a elevated rails on the Tozai Line
Dec. 1 Tokyo Metro launches a Wi-Fi service for overseas visitors at 143 Tokyo subway stations
2015 Aug.4 Opening of LAWSON METRO'S, a new type of "ekinaka" (inside the station) convenience store at Akihabara
2016 Mar.26 Tokyo Subway 1-Day Ticket is changed to Tokyo Subway 24-Hour Ticket
Apr.1 Establishment of the Comprehensive Learning and Training Center
2017 Apr.1 VIETNAM TOKYO METRO ONE MEMBER LIMITED LIABILITY COMPANY begins operations
Apr.5 Establishment of Metro Station Facilities Co.,Ltd. and Metro Business Associe Co.,Ltd.