In Slovakia, we have national holidays during which, all shops are closed. So mind this information in advance, in order to avoid starvation. However, some restaurants (depends on the owner) remain open during these days. Luckily, also University is closed on these days :). Public transport works in reduced timetable. Here is a list of our National Holidays:

Date Holiday
Jan 1st.  Establishment of Slovak Republic
Jan 6th. Day of Holy Trinity
Friday before Easter  Holy Friday (Easter)
Monday after Easter  Holy Monday (Easter)
May 1st.  Holiday of Work
Jul 5th.  Saint Cyril and Methodius Day
Aug 29th.  Slovak Uprising Memorial Day
Sep 1st.  Slovak Constitution Day
Nov 1st.  All Saint's day
Dec 24th-26th Christmas