__NOTOC__ This is a timeline of Slovenian history, comprising important legal and territorial changes and political events in Slovenia and its predecessor states. To read about the background to these events, see History of Slovenia. See also the list of presidents of Slovenia.

third century BC Year Date Event 250 BC The Celtic La Tène culture comes to the territories of modern Slovenia, replacing the Hallstatt culture. 221 BC The border of the Roman Republic arrives at the Julian Alps.

second century BC Year Date Event 181 BC The Roman foundation of Aquileia marks the beginning of a gradual conquering of the territories of modern Slovenia by the Romans. 178 BC Romans conquer Histria. Subsequently, in 129 BC, they subjugated the Taurisci people and in 115 BC the Carni people.

first century BC Year Date Event 48 BC Noricans take the side of Julius Caesar (c. 100–44 BC) in the civil war against Pompey (106–48 BC). 16 BC Noricans, having joined with the Pannonians in invading Histria, are defeated by Publius Silius, proconsul of Illyricum. 12 BC The army of Romans, led by Tiberius (42–37 BC, reigned 14–37), starts conquering Pannonia. 9 BC Pannonia is subdued and incorporated with Illyricum, the frontier of which was thus extended as far as the Danube.

first century Year Date Event 7 Pannonians, with the Dalmatians and other Illyrian tribes, revolt, and are overcome by Tiberius and Germanicus (15 BC–19 AD), after a hard-fought campaign which lasted for two years. 9 The Roman Empire finally conquers Pannonia (which includes the biggest part of present-day Slovenia). Roman legions stay in Poetovio (modern Ptuj). 40 The Noricum Kingdom is ultimately incorporated to the Roman Empire by the Roman caesar Claudius (10 BC–54 AD, reigned 41–54). Noricum includes Carinthia and most of Styria. Hence, the entire territory of modern Slovenia is within the borders of the Roman Empire. 46 Celeia (modern Celje) gets its municipal rights under the name municipium Claudia Celeia.

second century Year Date Event 103 Roman caesar Trajan (53–117, reigned 98–117) moves the Legio XIII Gemina to the north border in Karnunt (Carnuntum) (today Deutsch Altenburg in Lower Austria) in Pannonia along the Danube River.

third century Year Date Event 290 Noricum is divided under Roman Emperor Diocletian (245–313, reigned 284–305) into Noricum Ripense (along the Danube) and Noricum Mediterraneum (the southern mountainous district).

fourth century Year Date Event 320 Celeia is incorporated with Aquileia (Oglej) under Roman Emperor Constantine I. (272–337, reigned 307–337).

fifth century

sixth century Year Date Event 550 The first wave of Slavic settlement, originating from Moravia, reaches the Eastern Alps region and the western margin of the Pannonian plain. 568 Lombards leave the territories of modern Slovenia and the borderlands of Pannonia, moving into Italy. 585 The second and most important wave of Slavic settlement takes place. Slavs and Avars settle in Eastern Alps (Julian Alps, Karavanke), eventually occupying an area more than twice the size of today's Slovenia. Slavic settlement is proven by the decline of dioceses in the Eastern Alpine region in second half of the sixth century, as well as in the change of population, the material culture and the linguistic identity of the area.

seventh century Year Date Event 610 Avars attempt to invade Italy. After their power is weakened, a relatively independent March of Slavs () appears. 623 Uprising of Slavs led by Samo1 against Avars. Samo's Tribal Union is formed. 631 The Battle of Wogastisburg (probably Forchheim) between Samo's army and Austrasian forces, led by Merovingian king Dagobert I of the Franks (603–639, reigned 629–639). 658 Samo's death. The Tribal Union declines, but a part of the March of Slavs maintains independence and becomes known in historical sources under the name of Carantania. The center of Karantania was Zollfeld, north of modern Klagenfurt.

eighth century Year Date Event 745 Karantania loses its independence and becomes a margraviate and tantamount part of the semifeudal Frankish empire later under the rule of king Charlemagne (742–814, reigned 771–814) due to pressing danger of Avar tribes from the east. 796 The Slavic duke of Carniola, Vojnomir, aids the Carolingian duke Eric of Friuli against the Avars. The Synod ad ripas Danuvii convoked by Charlemagne's son Pepin and presided over by Paulinus II of Aquileia establishes the Roman Catholic Archdiocese of Salzburg detaching it from the northernmost territory of the Patriarchate of Aquileia. The synod focuses on the evangelization of the Slavs. 798 Salzburg is raised to the rank of an archdiocese

ninth century Year Date Event 811 The southern boundary of the archdiocese of Salzburg is moved south to the Drava river at the expense of the Patriarchate of Aquileia. 840 The Balaton Principality emerges in Pannonia. 843 Karantania passes into the hands of Louis the German (804–876). 871 The earliest written record of the ancient Karantanian ritual of installing dukes Conversio Bagoariorum et Carantanorum, where is written: ... illi eum ducem fecerunt... (they were made dukes). 876 The principality of Prince Kocelj (Balaton Principality) loses its independence. 887 Arnulf of Carinthia (850–899) a grandson of Louis the German assumes his title of King of the East Franks and becomes the first Duke of Carinthia. 894 Great Moravia probably loses a part of its territory—present-day Western Hungary—to Arnulf of Carinthia, who failed to conquer Great Moravia in 892, 893, 894/895 and 899. 895 Accord between Arnulf of Carinthia and the Bohemian Duke Bořivoj (reigned 870–895), Bohemia is freed from the danger of invasion. 896 Finno-Ugric Magyars, led by Árpád, settle in the Pannonian plain. The centre of their settlement becomes the region around the Theiss River (Hungary). 899 Arnulf of Carinthia dies.

10th century Year Date Event 906 Invading Magyars destroy the weakened empire of Great Moravia. 907 Slovene territory is settled by Magyars. 952 The Great Carantania. (to 1180) 955 German king Otto I (912–973, reigned 936–973) defeats the Magyars at the Battle of Lechfeld near Augsburg, halting their advance in Central Europe. 976 The March of Austria is established. Carantania becomes a duchy in its own right, including Styria and today's East Tirol 1000 Carinthia, Styria and Carniola provinces emerge on the territory of Carantania. The Freising Manuscripts, the first Latin-script continuous text in a Slavic language and the oldest document in Slovene, are written.

11th century

12th century Year Date Event 1112 The first record mentions Ljubljana by its modern name (by its German name Castrum Laibach). (to 1125) 1122 The first mention of Celje in the early Middle Ages under the name of Cylie in Admont's Chronicle. (to 1137) 1164 The first mention of Maribor as Castrum Marchburch.

13th century Year Date Event 1269 The Carantanian dynasty becomes extinct. 1274 Bohemian king Ottokar II. (reigned as a king 1253–1278) a candidate for the German throne refuses to appear or to restore the provinces of Austria, Styria, Carinthia and Carniola, which he has seized. 1282 The rule of Habsburg dukes over most Slovene lands begins.

14th century Year Date Event 1335 The Duchy of Carinthia is bestowed by Louis the Bavarian on the dukes of Austria.

15th century Year Date Event 1414 The Habsburg Duke Ernest the Iron (1377–1424) thrones according to the ancient Karantanian ritual of installing dukes on the Duke's Stone and he addresses again as an archduke. 1451 Celje acquires town rights by orders from Frederick II, the Count of Celje. 1461 Ljubljana becomes the seat of a diocese. 1473 The city walls and a defensive moat are built in Celje.

16th century Year Date Event 1511 Ljubljana is devastated by an earthquake. 1532 The Siege of Maribor ends in a defensive victory. 1550 Primož Trubar publishes the first books in Slovene, Catechismus and Abecedarium. 1566 The region of Prekmurje is occupied by Ottomans during the Siege of Szigetvar. 1583 Jurij Dalmatin translates to Slovene and publishes the Bible. 1593 The Battle of Sisak restores the balance of power and brings the expansion of the Ottoman Empire into the Slovene Lands to a halt.

17th century Year Date Event 1622 5 May An earthquake occurs near Ljubljana. It measures about 5 on the Moment magnitude scale or 4.9 on the Richter scale, 1688 The Prekmurje region is occupied by Austrians. 1693 The scholarly society Academia operosorum Labacensis is established in Ljubljana.

18th century Year Date Event 1701 The Philharmonic Society (Academia philharmonicorum) is established in Ljubljana.

19th century Year Date Event 1809 Lower Carinthia incorporates to France as Duchy of Carinthia was divided into two parts, Upper or Western Carinthia and Lower or Eastern. 1813 Lower Carinthia is re-conquered. 1821 Congress of Laibach takes place in Ljubljana. 1838 First works, tracings on Slovene territory of a railway route Vienna – Trieste in a so-called "Southern Railway" (Južna železnica) begin. 1845 First works on the "Southern Railway" between Celje and Ljubljana begin, 1846 27 April First locomotive of the "Southern Railway" comes to Celje. 18 May Trial run of the first train on the "Southern Railway" to Celje is performed. 2 June The "Southern Railway" to Celje is open for public. 1848 The United Slovenia (Zedinjena Slovenija), the first Slovene political programme rises. 18 April The Ljubljana railway station is finished. 1849 The Duchy of Carinthia is created as a separate crownland. 18 August First locomotive arrives at Ljubljana railway station. 16 September First train of the "Southern Railway" arrives in Ljubljana. 19 September "Southern Railway" to Ljubljana is ceremonially opened. 1850 14 May Emperor Francis Joseph lays the foundation stone of Trieste railway station. 1851 Hermagoras Society (), the first Slovene publisher, is established in Klagenfurt and publishes books in Slovene. 1857 18 July The "Carinthian railway" between Maribor and Klagenfurt is being built. 27 July The "Southern Railway" is completed and opened. 1862 12 November The railway line of the "Carintnhian railway" on the route Maribor – Vuzenica is built. 1863 31 May The "Carinthian railway" is built 1864 The Kosler brothers establish the Pivovarna Union (The Union Brewery). 1869 17 May Rally at Vižmarje near Ljubljana gathers around 30,000 people where programme of the United Slovenia is demanded. 1889 July Strike of coal miners in the Central Sava Valley in Zagorje and Trbovlje. 1890 The railway line on the route Radgona – Ljutomer is built. 1 May Labour Day is celebrated first time. 1891 The railway line on the route Ljubljana – Kamnik is built. The railway line on the route Celje – Velenje is built. 1894 First public power station in Škofja Loka is built. The railway line on the route Ljubljana – Novo Mesto is built. 1895 People's loan bank (Ljudska posojilnica) is founded by Catholic middle class. Ljubljana earthquake 1896 The National hall (Narodni dom) is built in Celje. 1898 The railway line on the route Ljubljana – Kočevje is built. 1899 The railway line on the route Velenje – Dravograd is built. 1899 The Maribor National Hall is built. 1900 Liberal middle class founds the first Slovene bank, The Credit bank of Ljubljana (Ljubljanska kreditna banka).

20th century