| Nov. 28, 1917 | The Provisional Assembly of Estonia (Maapäev) declared itself to be the supreme power in Estonia |
| Feb. 24, 1918 | Maapäev’s Committee of Elders declared the independent Republic of Estonia. The first Provisional Government was nominated. |
| March-Nov., 1918 | German occupation on the territory of Estonia |
| Nov. 28, 1918 | The beginning of the Estonian War of Independence |
| April 5-7, 1919 | The Estonian Constituent Assembly was elected, laying a formal foundation to the independent statehood of Estonia |
| April 23, 1919 | The first session of the Constituent Assembly; birthday of the Estonian Parliament |
| Feb. 2, 1920 | The Tartu Peace Treaty was signed by the Republic of Estonia and Soviet Russia, wherein Russia recognized the Republic of Estonia |
| June 15, 1920 | The Estonian Constituent Assembly adopted the first Constitution of the Republic of Estonia, according to which Estonia was a parliamentary democratic republic |
| Sept. 22, 1921 | Estonia became a member of the League of Nations |
| Oct. 14-16, 1933 | A draft constitution was approved on a referendum |
| March 12, 1934 | Introduction of a moderately authoritative regime. The power concentrated in the hands of the President Konstantin Päts |
| July 28, 1937 | The Constituent Assembly adopted the third Constitution of the Republic of Estonia. The institutions of the President with great powers and the Riigikogu with two Chambers were established |
| April 24, 1938 | K. Päts was elected the President of the Republic of Estonia |
| Aug. 23, 1939 | Soviet Russia and Germany signed a nonaggression pact and the secret protocols, according to which Estonia became a part of the USSR sphere of interests |
| Sept. 28, 1939 | The USSR, threatening force, obliged Estonia to sign an agreement of mutual assistance, allowing establishment of Red Army military bases in Estonia and turning Estonia in essence into a protectorate of the USSR |
| June 17-18, 1940 | The Red Army occupied Estonia |
| Aug. 6, 1940 | Annexation of Estonia by the USSR, beginning of large-scale terror |
| June 14, 1941 | Beginning of the first deportation: over 10,000 people were deported to Russia |
| June 22, 1941 | Germany attacked the USSR and occupied Estonia. Estonia was annexed to the State Commissariat Ostland as a General Commissariat |
| Autumn, 1944 | German occupation was replaced by Soviet occupation; 70,000 Estonians fled the country to get away from the mass terror |
| March 25, 1949 | Over 20,000 people were deported to Siberia |
| Aug. 23, 1987 | First large political demonstration in Hirvepark, Tallinn |
| Sept. 11, 1988 | Rally “Song of Estonia” with 300,000 participants |
| Nov. 16, 1988 | The 11th Supreme Soviet of the Estonian SSR passed a sovereignty declaration |
| Aug. 23, 1989 | A 600 km long human Baltic Chain was organized from Tallinn to Vilnius (2 million people) |
| March 11-12, 1990 | The first session of the Congress of Estonia (representative body of Estonian citizens) decided to restore the Republic of Estonia on the basis of legal continuity |
| March 30, 1990 | The Supreme Soviet proclaimed a transition period for the restoration of the Republic of Estonia |
| March 3, 1991 | Referendum on restoration of the independent Republic of Estonia (supported by 77.8 % of the voters) |
| Aug. 20, 1991 | The Supreme Council passed a resolution on national independence and on the convening of the Constitutional Assembly |
| Sept. 13, 1991-April 10, 1992 | The Constitutional Assembly elaborated a draft constitution of the Republic of Estonia |
| Sept. 17, 1991 | Estonia became a member of the United Nations Organization |
| June 28, 1992 | The Constitution of the Republic of Estonia was adopted by a referendum |
| Oct. 5, 1992 | The Riigikogu elected Lennart Meri the President of the Republic of Estonia |
| Oct. 7, 1992 | The Riigikogu declared the restoration of constitutional order |
| Aug. 31, 1994 | The last Russian troops left Estonia |
| Sept. 20, 1996 | The Electoral Body re-elected Lennart Meri the President of the Republic of Estonia |
| March 31, 1998 | The beginning of the accession negotiations between the European Union and Estonia |
| Sept. 21, 2001 | The Electoral Body elected Arnold Rüütel the President of the Republic of Estonia |
| Nov. 21-22, 2002 | At the Prague Summit Estonia was invited to join NATO |
| Sept. 14, 2003 | Referendum on the European Union membership (supported by 66,8 % of voters) |
| March 29, 2004 | Estonia became a full member of NATO |
| May 1, 2004 | The Accession Treaty between Estonia and the European Union comes into force |