13 January – Freedom Fighters’ Day. On 13 January 1991, as the Soviet army and Special Forces were storming the Lithuanian TV tower and Radio and Television buildings, 14 freedom fighters were killed and nearly a thousand people were injured or otherwise suffered.
27 January – International Holocaust Remembrance Day. On 27 January 1945, the Auschwitz (Poland) concentration camp was liberated.
11 February. On 11 February 1953, partisan colonel Juozas Šibaila-Merainis, signatory of the LLKS (Union of Lithuanian Freedom Fighters) Council Declaration of 16 February 1949, member of the LLKS Council Presidium, head of the LLKS public section, and editor of the newspaper ‘Prie rymančio rūpintojėlio’ (‘By the Leaning Cross’) was killed in the forest of Dovydai, Ramygala District.
16 February – Day of Restoration of Independence of Lithuania. On 16 February 1918, the Council of Lithuania signed the Act of Independence of Lithuania.
2–22 February 1949. The all-Lithuania congress of Lithuanian partisan commanders was held in Radviliškis County, during which the Union of Lithuanian Freedom Fighters (LLKS) was established. On 16 February, the Declaration of the LLKS Council was announced; this document of constitutional importance evidenced the continuity of the state of Lithuania during the period of occupation.
February 1986. Stasys Guiga-Tarzanas, the Lithuanian partisan who managed to hide the longest, died in the village of Činčikai, Švenčionys District.
11 March – Day of Restoration of Independence of Lithuania. On 11 March 1990, the Lithuanian Supreme Council passed the Act on the Restoration of the Independent Lithuanian State.
25–28 March 1949 – one of the major deportations of Lithuanian people under the codename ‘Coastal surf’ (approximately 30,000 people were deported).
11 April – International Day of the Liberation of Nazi Concentration Camp Inmates. On 11 April 1945, the prisoners of Buchenwald (Germany) were liberated.
8 May – Day of Commemoration of the Victims of World War II. On 8 May 1945, Germany capitulated before the anti-Hitler coalition.
14 May – Civil Resistance Day. On 14 May 1972, Romas Kalanta burned himself in Kaunas in protest at the occupation of Lithuania.
Third Sunday of May – Day of Commemoration of Partisans and Unity of the Army and Society.
30 May. On 30 May 1953, using sleeping gas, partisan general Jonas Žemaitis-Vytautas, signatory of the LLKS (Union of Lithuanian Freedom Fighters) Council Declaration of 16 February 1949, Chairman of the LLKS Council Presidium, and fourth Lithuanian President was arrested in a bunker in the forest of Šimkaičiai, Jurbarkas District. 1953 – the end of organised partisan resistance in Lithuania.
22–23 May 1948 – the most numerous mass deportation of Lithuanian people under the codename ‘Spring’ (approximately 40,000 people were deported).
May 1953. An uprising of political inmates started in Norilsk of Krasnoyarsk Krai, USSR. The uprising was only suppressed in August 1953.
May 1954. An uprising, which lasted 40 days, of political inmates started in Kengir, Karaganda Oblast, Kazakh SSR.
3 June – Day of the Sąjūdis. On 3 June 1988, the Reform Movement of Lithuania was established.
11 June. On 11 June 1949, partisan captain Vytautas Gužas-Kardas, signatory of the LLKS (Union of Lithuanian Freedom Fighters) Council Declaration of 16 February 1949, member of the LLKS Council, and Chief of Staff of the Western Lithuania Partisan District was killed in the village of Smaidriai, Eržvilkas Volost, Tauragė County.
14 June – Day of Mourning and Hope. On 14 June 1941, the first mass deportation of Lithuanian people started (approximately 18,000 people were deported).
15 June – Day of Occupation and Genocide. On 15 June 1940, the USSR occupied Lithuania.
15 June. On 15 June 1978, the Lithuanian Freedom League (LLL) was established.
22 June. On 22 June 1941, the Germany-USSR war and Nazi occupation of Lithuania started.
23 June – Day of the June Uprising. The June Uprising took place on 22–28 June 1941.
On 24–26 June 1941, a mass massacre of civilian Lithuanians took place, in which approximately 1,100 people were killed. On 26–27 June, a mass massacre of political prisoners, among them Lithuanians, took place in Cherven (Belorussia).
End of June 1941 start of the genocide (Holocaust) of Lithuanian Jews, in which almost 200,000 Jews were killed.
22 July. On 22 July 1950, partisan colonel lieutenant Leonardas Vilhelmas Grigonis-Užpalis, signatory of the LLKS (Union of Lithuanian Freedom Fighters) Council Declaration of 16 February 1949, member of the LLKS Council Presidium, and commander of the Prisikėlimas Command was killed in the bunker of the headquarters of the Prisikėlimas Command in the forest of Daugėliškiai, Ariogala District.
31 July. On 31 July 1991, the Special Purpose Police Squad (OMON) of the Ministry of the Interior of the USSR murdered 7 Lithuanian customs, police, and border guard officers at Medininkai border post. Only the seriously injured customs officer Tomas Šernas survived.
July 1953. An uprising of political inmates started in Vorkuta of Komi ASSR; it was suppressed in early August.
2 August – International Roma Holocaust Remembrance Day. On 2 August 1944, the “Zigeunerlager” at the Auschwitz-Birkenau (Poland) concentration camp was liquidated. Approximately 3000 Roma interned there were killed.
13 August. On 13 August 1949, partisan major Petras Bartkus-Žadgaila, signatory of the LLKS (Union of Lithuanian Freedom Fighters) Council Declaration of 16 February 1949 and Secretary of the LLKS Council Presidium, and partisan Captain Bronius Liesys-Naktis, signatory of the LLKS (Union of Lithuanian Freedom Fighters) Council Declaration of 16 February 1949 and member of the LLKS Council Presidium, were killed in the camp set up in the forest of Užpelkiai, Grinkiškis Volost, Radviliškis County.
22 August. On 22 August 1991, the Moscow coup d’état attempt failed. This altered the political situation in the USSR considerably and Lithuania became a truly sovereign state.
23 August – European Day of Remembrance for the Victims of Stalinism and Nazism and Baltic Way Day. On 23 August 1939, the secret protocols of the USSR-Germany treaties, which determined the occupation of the Baltic States, were signed. On 23 August 1989, the Lithuanian Sąjūdis, in cooperation with the Estonian and Latvian National Fronts, held the Baltic Way event, when 2 million people formed a live chain from Vilnius to Tallinn as a way to demand independence.
23 August. On 23 August 1979, the Baltic memorandum was signed and forwarded to the UN Secretary General and foreign state embassies. The memorandum was signed by 38 Lithuanian, 7 Latvian, and 4 Estonian dissidents and the most prominent Russian human rights fighters.
31 August – Freedom Day. On 31 August 1993, the Russian Army left Lithuania.
23 September – Day of Commemoration of the Victims of the Genocide of Lithuanian Jews. On 23 September 1943, the Vilnius ghetto was liquidated.
28 September – Day of Commemoration for the Victims of Tuskulėnai. On 28 September 1944, the first victims were killed in the KGB building in Vilnius. Their remains were buried in the territory of the former Tuskulėnai Estate.
28 September. On 28 September 1949, partisan captain Aleksandras Grybinas-Faustas, signatory of the LLKS (Union of Lithuanian Freedom Fighters) Council Declaration of 16 February 1949, member of the LLKS Council, and commander of the Tauras Command, was killed in the forest in the vicinity of the village of Viliūšiai, Jankai Volost, Šakiai County.
2 October. On 2 October 1969 in the vicinity of the villages of Menčiai and Liepkalnis, Akmenė District, the KGB killed Kostas Liuberskis-Žvainys, partisan of the Duke Žvelgaitis Squad of the Prisikėlimas Command. He was the publisher and editor of the underground newspaper ‘Partizanų šūviams aidint’ (‘Echo of partisan shots’) published until 1957. He was the last Lithuanian partisan to be killed.
2 October. 2–3 October 1951 – one of the major deportations of Lithuanian people under the codename ‘Autumn’ (approximately 17,000 people were deported).
16 October – Day of Commemoration for the Victims of the Genocide in Lithuania Minor. Genocide of the population in the major area of Lithuania Minor was started in October 1944. Approximately 300,000 people were killed and 100,000 people were deported.
29 October. On 29 October 1941, the largest massacre of Jews in Lithuania during the Nazi occupation took place in Kaunas IX Fort (9,200 people were killed).
13 November. On 13 November 1978, the organisation for the protection of the rights of believers and clergymen—the Catholic Committee for the Defence of Believers’ Rights—was established.
25 November. On 25 November 1976, the Lithuanian Helsinki Group was established.
26 November. On 26 November 1954, partisan General Jonas Žemaitis-Vytautas, signatory of the LLKS (Union of Lithuanian Freedom Fighters) Council Declaration of 16 February 1949, Chairman of the LLKS Council Presidium, and fourth Lithuanian President was shot at the Butyrka prison in Moscow.
29 November. On 29 November 1957, partisan colonel Adolfas Ramanauskas-Vanagas, signatory of the LLKS (Union of Lithuanian Freedom Fighters) Council Declaration of 16 February 1949, deputy Chairman of the LLKS Council Presidium, Commander of the Defence Forces, and Commander of the Southern Lithuania Partisan District, was shot in Vilnius.