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- Jan. 27, 1849
- A French whaling boat, the Liancourt, discovered Dokdo, and named it "Rochers Liancourt."
- Apr. 6, 1854
- A Russian naval vessel, the Pallada, discovered Dokdo and Ulleungdo, and named Seodo "¬°¬Ý¬Ú¬Ó¬å¬è¬Ñ," and Dongdo "¬®¬Ö¬ß¬Ö¬Ý¬Ñ¬Û."
- Apr. 25, 1855
- A British warship, the Hornet, discovered Dokdo, and named it "Hornet."
- Mar. 29, 1877
- The Great Council of State, or Dajokan (÷¼ïÙί), of Japan sent an order to the Home Affairs Ministry which stated that Ulleungdo and Dokdo had nothing to do with Japan.
- Oct. 25, 1900
- The Great Han Empire enacted Imperial Ordinance No. 41, which stipulated that Dokdo fell under the jurisdiction of Ulleungdo.
- Oct. 27, 1900
- Having been published in the official gazette on Oct. 25, 1900, Imperial Ordinance No. 41 was promulgated.
- Sep. 25, 1904
- A Japanese warship mentioned in its records, "Koreans refer to the island as 'Dokdo (Ô¼Óö)' and Japanese fishermen call it 'Riankoshima («ê«ä«ó«³Óö)'."
- Feb. 13, 1905
- Japan posted Shimane Prefecture Notice No. 40 in a local newspaper, claiming that the island had been incorporated into the prefecture.
- Nov. 9, 1905
- Japan completed the construction of underwater cable between Dokdo and Matsue in Shimane Prefecture.
- Mar. 1906
- Govenor Sim Heung-taek of Uldo (Ulleungdo) reported to Governor Lee Myeong-rae of Chuncheon that Japanese officials claimed the incorporation of Dokdo, part of Uldo, into Japan.
- May 20, 1906
- State Council Minister Park Je-sun strongly denied Japan's claim to Dokdo, calling it "completely ungrounded" (Ordinance No. 3).
- Sep. 24, 1906
- The jurisdiction of Uldo was transferred from Gangwon-do to Gyeongsangnam-do.
- Jan. 29, 1946
- SCAPIN (Supreme Command for Allied Powers Instruction Note) No. 667 excluded Dokdo from Japanese territory.
- Jun. 22, 1946
- SCAPIN No. 1033 excluded Dokdo from the operation-permitted zone to Japanese vessels.
- Aug. 16, 1947
- The Corea Alpine Club dispatched a academic exploration team to Dokdo and Ulleungdo.
- Jun. 8, 1948
- The US Air force attacked Dokdo, leaving over 30 Korean fishermen killed or injured.
- Jun. 1950
- A memorial monument was built for the victims of the Dokdo bombing.
- Feb. 23, 1951
- The Japanese government proclaimed the Ministry of Finance Ordinance No. 4, which excluded Dokdo from its territory.
- Apr. 7, 1951
- In its draft of the San Francisco Peace Treaty, Britain recognized Dokdo as a territory of Korea.
- Jun. 6, 1951
- The Japanese government proclaimed the Prime Ministerial Ordinance No. 24, which excluded Dokdo from its territory.
- Jan. 18, 1952
- President Rhee Syngman promulgated the Presidential Declaration of Sovereignty over Neighboring Seas, or the Declaration of the Peace Line.
- Dec. 4, 1952
- The US embassy to Korea promised that US forces would not use Dokdo as a place for bombing drills.
- Jul. 8, 1953
- The National Assembly passed a resolution on Japan's invasion of Dokdo
- Jul. 12, 1953
- The Police fought off a Japanese Coast Guard patrol vessel "Hekura" which approched Dokdo.
- May 18, 1954
- The Korean government sent officials and masons to Dokdo to carve letters that read "Korean territory" and the symbol of teageuk on stones.
- Aug. 10, 1954
- An unattended lighthouse was established on Dongdo.
- Aug. 23, 1954
- The Police fought off a Japanese Coast Guard patrol vessel "Oki" which approched Dokdo.
- Sep. 15, 1954
- Korea issued its first Dokdo stamp.
- Oct. 28, 1954
- The Korean government rejected Japan's proposition to take the issue of Dokdo to the International Court of Justice.
- Nov. 21, 1954
- The Police fought off a Japanese Coast Guard patrol vessel "Hekura" which crossed the sea border near Dokdo.
- Jul. 1955
- A new unmanned lighthouse was established.
- Dec. 30, 1956
- The Police withdrew the Dokdo Security and the Dokdo Volunteer Garrison.
- Dec. 26, 1961
- The National Construction Research Institute (currently the National Geographic Information Institute) surveyed Dokdo and made a 1:3000 topographical map.
- Feb. 3, 1962
- Members of the Korean Amateur Radio League communicated by radio with foreign leagues.
- Oct. 14, 1981
- First resident, Choi Jong-deok, resigstered his address on Dokdo.
- Nov. 16, 1982
- Dokdo was designated Natural Monument No. 336, Dokdo Seaweed Habitat.
- Nov. 17, 1991
- Two Koreans, Kim Seong-do and Kim Sin-yeol, moved their official domicile to Dokdo.
- Mar. 24, 1997
- Telephone service began on Dongdo.
- Aug. 8, 1997
- The Dokdo Meseum opened on Ulleungdo.
- Nov. 7, 1997
- A monument unveiling ceremony was held to celebrate the completion of the construction of the dock on Seodo.
- Dec. 13, 1997
- The Special Act on the Preservation of Ecosystem in Island Areas Including Dokdo Island was enacted.
- Dec. 10, 1998
- A manned lighthouse was built.
- Jan. 22, 1999
- The New Agreement on Fisheries between the Republic of Korea and Japan came into effect.
- Dec. 1999
- The title of the Natural Monument No. 336, the Dokdo Seaweed Habitat, was changed to the Dokdo National Nature Reserve.
- Apr. 2000
- According to the Ulleung-gun Ordinance No. 1395, the administrative name of Dokdo was changed from Dodong-ri to Dokdo-ri.
- Jul. 26, 2001
- A 1:5000 nautical chart of Dokdo was first issued.
- Jun. 30, 2002
- The Ulleung base station was established for mobile phone service on Dokdo.
- Jan. 1, 2003
- Dokdo was given its postal code, 799-805.
- Apr. 24, 2003
- The Gyeongsangbuk-do office of the Korea Post installed a big mailbox on Dokdo.
- Jan. 16, 2004
- The Korea Post issued a set of stamps on the theme of "Nature of Dokdo."
- Mar. 16, 2005
- Japan's Shimane Prefecture enacted an ordinance to designate February 2nd as Takeshima Day.
- Mar. 17, 2005
- The National Security Council of Korea announced the doctrine of key policies toward Japan.
- Mar. 2005
- Dokdo became entirely open to the general public.
- Apr. 18, 2005
- The Dokdo Ranger's Office was established under Ulleung-gun, Gyeongsangbuk-do.
- May 2005
- The National Assembly passed the Act on the Sustainable Use of Dokdo Island.
- Jul. 4, 2005
- The Gyeongsangbuk-do Council enacted an ordinance that designated October as the Month of Dokdo.
- Jul. 2005
- The Korean Navy held a launching ceremony of the 14,000-ton transport ship, the Dokdo.
- Apr. 2007
- The inauguration ceremony of the head of Dokdo-ri was held.
- Dec. 2007
- An absentee voting for the presidential election was conducted for the first time on Dokdo .
- Aug. 14, 2008
- By an executive order, the Dokdo Research Institute was launched under the Northeast Asian History Foundation.
- Oct. 2, 2008
- The National Assembly organized the Special Committee on the Protection of Sovereignty over Dokdo.
- Nov. 20, 2009
- The National Assembly established the branch library for Dokdo.
- Apr. 2010
- National Assembly Speaker Kim Hyong-O paid a visit to Dokdo for the first time as an incumbent Speaekr.
- Sep. 16, 2010
- The National Assembly installed a screen in the main building to show live video of Dokdo.
- Oct. 1, 2010
- Ulleung-gun enacted Article 11 of the Ordinance on the Management of the National Nature Reserve of Dokdo, which specifies that the Governor of Ulleung-gun may issue a honorary residence registration card to applicants.
- Oct. 2010
- Ulleung-gun declared October 25th as Dokdo Day.
- Aug. 2012
- President Lee Myung-bak visited Dokdo for the first time as incumbent president.