Polish President Andrzej Duda on Tuesday will meet with his Czech, Slovakian and Hungarian counterparts, Milosz Zeman, Andrej Kiska and Janos Ader, in Prague and attend celebrations marking the 20th anniversary of the enlargement of NATO.
January 15 marks the 150th anniversary of the birth of Stanisław Wyspiański.
The battle carried a special significance for Poles during the 123-year period when the nation did not exist on any map.
Killed by the German Nazis while writing his novel Messiah, the manuscript went missing and is now considered one of the Holy Grails of literature.
Polish President Andrzej Duda in Ukraine on Sunday took part in observances marking the 75th anniversary of the Volhynia Massacre and paid homage to the victims.
The 6th edition of the "Daffodils" educational campaign devoted to the World War Two Warsaw Ghetto Uprising as well as a commemorative concert will mark the approaching 74th anniversary of the 1943 revolt (April 19).
Tuesday marked the 78th anniversary of the 1940 Katyn Forest Massacre of around 22,000 Polish army officers, policemen and members of the intelligentsia by the Soviet security agency NKVD. Most of the executions took place in the Katyn Forest in west Russia.
President Andrzej Duda on Sunday congratulated Belarus on the 100th foundation anniversary of the Belarusian People's Republic, a short-lived independent Belarusian state incorporated into the Soviet Union in 1919.
The National Library is a priceless treasury of Polish and European intellectual heritage and an extremely important pillar of statehood and culture, President Andrzej Duda said at a Monday gala marking the 90th anniversary of the Polish National Library.