For the start, in Slovenia, the state and church are separated by law, so religious holidays can not be national holidays, but since the majority of Slovenes was and still is Roman Catholic, the state provides day offs for the key holidays (since members of other religions can also take a day off for theirs).
novo leto – New Year, celebrated on January 1st, until 2012 January 2nd was also a holiday in Slovenia. Since you probably all know it, lets lose no further words …
Prešernov dan – Prešeren day, celebrated on Ferbruary 8th. It is our cultural holiday, marking the death of our greatest poet, France Prešeren. It is celebrated since 1944, 1946 to be precise.
velika noč and velikonočni ponedeljek – Easter and Easter Monday, as you know the fall on different dates every year.
dan upora proti okupatorju – celebrated on April 27th, used to be called dan OF (Osvobodilna fronta day). It marks the founding of OF, our resistance movement during ww2 that won the war in Slovenia on the side of the Allies. Otherwise it is also a day to remember our resistance against any kind of occupation on our ground.
praznik dela – Labour Day, celebrated both on May 1st and 2nd in Slovenia. Praising work with 2 days of eating gulash and doing nothing. It is traditional to set up may poles and lighting bone fires on the night before May 1st. In the morning of the other day usually brass bands march through towns and play revielles to wake the people, who go for hikes to certain locations in big numbers. There they eat čevapčiči or mostly gulash.
binkošti – Pontecost, another religious holiday that changes dates …
dan Primoža Trubarja – Primož Trubar Day, celebrated on June 8th since 2010 and is not a no-work day. Primož Trubar was a lutheran priest and the founder of our literary language. He wrote the first printed Slovene books in 1550. Also a working day.
dan državnosti – translates as “National Day”, some sort of “Independence Day” though not really. On this day in 1991 we formaly became independent from Yugoslavia and the Declaration of Independence of Slovenia was accepted. Two days later the 10 day war started.
Marijino vnebovzetje – Assumption day, celebrated on August 15th. A religious holiday.
združitev prekmurskih Slovencev z matičnim narodom – celebrated on August 17th, it is the day when Prekmurje became part of Slovenia after ww1, joining Prekmurje Slovenes, who lived in Hungary pretty much for themselves for more than 1000 years, with the remaining nation. A working day.
dan vrnitve Primorske k matični domovini – celebrated on September 15th, it marks the day when Primorska became Slovene again after ww2. Before it was part of Italy and Slovenes there had suffer terrible things from fascists. It’s the most important day for Primorci, no doubt.
dan reformacije – Reformation Day, celebrated on October 31st. On that day we remember all the great Slovenes that gave us a lot during the period of Reformation, among others our first printed books in 1550, Slovene bohoričica script, the first Slovene translation of the Bible in 1584, our first grammar, also in 1584 and many other things.
dan spomina na mrtve – All Saints Day, celebrated on November 1st. It’s when we remember our dead.
dan Rudolfa Maistra – Rudolf Maister Day, celebrated on November 23rd, a working day. On this day Rdolf Maister, a Slovene general, disarmed the German Schutzwehr in Maribor in 1918 with his army of 4000 men. With this act he secured the city of Maribor and the northern national and almost entirely also ethnic border in Styria. Truly one of the greatest Slovene heroes.
božič – December 25th, Christmas. I guess we all know what it’s all about …
dan samostojnosti in enotnosti – celebrated on December 26st. This day marks the announcement of the plebiscite that took place on December 23rd 1990. 93,2 % of the voters participated on it and from those 95 % voted for “yes” in the matter if Slovenia shall become an independent country. A remarkable achievement, unseen ever since or before.