1918

Mar.   Shokosha Watch Research Institute established, the forerunner of Citizen Watch Co., Ltd.

1924

Dec.   First pocket watch completed.

1930

May   Citizen Watch Co., Ltd. established.
May   Yosaburo Nakajima appointed president.

1931

Jun.   First wrist watch completed.

1936

May   Tanashi Factory constructed.

1941

Jul.   Production of machine tools begins.

1945

Oct.   Shinji Nakajima appointed president.

1946

Mar.   Eiichi Yamada appointed president.

1949

Jun.   Citizen Trading Co., Ltd. established.

1952

Mar.   First Japanese-made watch with a calendar introduced.

1953

Mar.   Rhythm Watch Co., Ltd. becomes an affiliate.

1955

Dec.   Export of wrist watches begun.

1960

Mar.   Import-export agreement concluded with the U.S. Bulova Watch Co.
Mar.   Technical assistance agreement with India.

1964

Aug.   Technology research laboratory established.
Dec.   Citizen Business Machines established.

1965

Mar.   Production of business machines begun. (Adding machines, camera shutters)
Oct.   Office opened in former West Germany, start of full-fledged exports to Europe.

1966

Mar.   First Japanese-made electronic watch “X-8” introduced.

1970

Mar.   CNC automated lathe “Cincom” developed.

1971

Jun.   Precision Machinery Division established.

1976

Mar.   Production of quartz oscillators begun.
Aug.   World’s first analogue quartz watch with solar cell "CRYSTRON SOLAR CELL" introduced.

1978

Feb.   Head Office moved to Shinjuku Mitsui Bldg. in Tokyo.

1980

Jun.   Industry's first microcomputer controlled line impact printer introduced.

1981

Jun.   Rokuya Yamazaki appointed president.
Oct.   Systems and Peripherals Division established.

1982

Sep.   Special Sales Division established, full-fledged sales of watch components started.

1983

Mar.   Chip LED lamp CL Series developed.
May   IC sensor electronic thermometer introduced.

1987

Jun.   Michio Nakajima appointed president.

1990

Jan.   Citizen of the Year annual award established.

1992

Feb.   Acquired German machine tool company, Boley GmbH.

1993

May   World's first multizone “Radio-Controlled Watch” introduced.

1996

Apr.   Solar-powered Eco-Drive received the Eco Mark the first for a watch.

1997

Jun.   Hiroshi Haruta appointed president.

2001

Mar.   Head Office moved to Nishi-Tokyo.

2002

Mar.   Sales of white LED as a backlight for color LCDs started.
Jun.   Makoto Umehara appointed president.

2003

Jun.   World's first full metal case radio-controlled watch with built-in antenna introduced.

2004

Jan.   Implemented Citizen Code of Conduct.
Oct.   Merged with Citizen Trading Co., Ltd.

2005

Apr.   Citizen Systems Japan Co., Ltd. established.
Oct.   Five consolidated companies (Citizen Electronics, Miyota, Cimeo Precision, Sayama Precision Industries, Kawaguchiko Precision) become wholly owned subsidiaries.
Oct.   Names of Citizen Group companies changed.

2007

Apr.   Company name changed to Citizen Holdings Co., Ltd.

2008

Jan.   Bulova Corporation becomes a consolidated subsidiary.
Apr.   Mitsuyuki Kanamori appointed president.
Jul.   Citizen Miyota Co., Ltd. and Citizen Finetech Co., Ltd. merge.
Jul.   Citizen Finetech Miyota Co.,Ltd. established.
Oct.   Miyano Machinery Inc. becomes a consolidated subsidiary.

2011

Apr.   Citizen Machinery Co.,Ltd. and Miyano machinery Inc. merge.
Apr.   Citizen Machinery Miyano Co., Ltd. estabilished.
Sep.   World's first light-powered , satellite synchronised watch "Eco-Drive SATELLITE WAVE" introduced.

2012

Apr.   Toshio Tokura appointed president.
Apr.   Prothor Holding SA becomes a consolidated subsidiary.

2013

Jul.   Citizen Watch Manufacturing Co., Ltd. established.

2014

Apr.   Over 100,000 automatic lathes shipped.

2015

Apr.   Names of Citizen Machinery Miyano Co., Ltd. changed to Citizen Machinery Co., Ltd.
Apr.   Citizen Finetech Miyota Co.,Ltd. and Citizen Seimitsu Co., Ltd. merge.
Apr.   Citizen Finedevice Co., Ltd. established

2016

Jul.   Frederique Constant becomes a consolidated subsidiary.
Oct.   Citizen Holdings Co., Ltd., Citizen Watch Co., Ltd.　and　Citizen Business Expert Co., Ltd.  merge.
Oct.   Company name changed to Citizen Watch Co., Ltd.
Oct.   The world’s thinnest light-powered watch, "Eco-Drive One" introduced.

2018

May   Citizen Group Although the 100th anniversary.

2019

Apr.   Toshihiko Sato appointed president.