March 12 – The acting government formally declares an epidemic and activates the national emergency response plan in response to the spread of COVID-19.[4]
March 30 – All public gatherings are banned, and movement is restricted to the municipality of residence (with some exceptions).[7]
April
April 18 – The government begins to ease restrictions on movement due to the decreasing number of COVID-19 cases, with the most severe bans lifted on April 30.[8][9]
May
May 2
No new COVID-19 infections are detected for the first time since the outbreak of the epidemic on March 4.[10]
Thousands of demonstrators on bicycles stage a protest against the government in Ljubljana due to allegations of corruption and mismanagement of the COVID-19 epidemic response.[11]
May 15 – Slovenia becomes the first European country to lift the declaration of the COVID-19 epidemic (effective May 31), but several restrictions remain in place.[12][13]
September
September 3 – After several delays, the first Slovene-built satellites, Nemo HD and Trisat, are carried successfully to space by Vega launch vehicle.[14]
October 19 - The government declares a COVID-19 epidemic again in response to the rising number of confirmed cases since September, enacts a 9 pm-6 am curfew and limits public gatherings and businesses.[16]
October 27 - To limit the spread of COVID-19, movement of citizens is again restricted to municipality of residence, though with more extensive list of exceptions.[17]
December
December 27 - Mass vaccination against COVID-19 starts with the Pfizer–BioNTech vaccine, at the same time as most other EU states.[18]