The National Day of Serbia is on the 15th February (The beginning of the Serbian revolution against Ottoman rule 1804, first constitution 1835). The National Day of Serbia which is also called Statehood Day. This as stated is celebrated on 15th February. It marks the anniversary of the First Serbian Uprising in 1804, which has in the end led to the creation of the Serbian independent state.
The National Day of Senegal is on the 4th April (Independence from France 1960). Independence Day or “Fête de l’indépendance,” is celebrated annually on the 4th April. This is to celebrate the country’s independence from France, which was achieved on the 4th April 1960.
The National Day of Saudi Arabia is on the 23 September (unification of the kingdoms Nejd and Hejaz 1932). This is also known as the Saudi National Day or the Day of the Unification. As explained this is an annual celebration on the 23rd September. It marks the anniversary of the unification of the Kingdom of Saudi Arabia by King Abdulaziz in 1932.
The National Day of Rwanda is on the 1 July (Independence from Belgium in 1962). This also known as “Kwibuka,” is commemorated annually on the 4th July. This day remembers the end of the genocide against the Tutsi in 1994 and also marks the start of the rebuilding process of Rwanda. See also the Belgium National Day.
The National Day of Russia is on the 12th June – Russia Day, declaration of sovereignty in 1990, (law priority over Soviet Union laws). Russia Day is the National Day of Russia. Basically is was explained above. This holiday celebrates the adoption of the Declaration of State Sovereignty of the Russian Federation on June 12, 1990.
The National Day of Romania is on the 1 December (Union Day, unification with Transylvania 1918). The National Day of Romania is also called the Great Union Day, is celebrated on December 1st each year. This day celebrates the unification of Transylvania, Bessarabia, and Bukovina with the Romanian Kingdom in 1918. Likewise this then led to the formation of Greater Romania.
The National Day of Qatar is on the 18 December (Official National Day; the assumption of power of Sheikh Jassem bin Mohamed al-Thani in 1878). Founder’s day celebrates the rise to power of Sheikh Jassem bin Mohamed bin Thani. Jassem is usually regarded as the father of the state of Qatar.
The National Day of Puerto Rico is on the 25th July (Constitution Day, establishment of Commonwealth of Puerto Rico 1952. Formerly Invasion Day (1898)). The 4th August 1952 of the Commonwealth of Puerto Rico established a full state holiday annually on the 25th July to be known as Puerto Rico Constitution Day.
The National Day of Portugal is on the 10 June (Portugal Day, “Day of Camões, Portugal, and the Portuguese Communities”, National Poet Luís de Camões dies in 1580). The National Day of Portugal, also known as “Portugal Day” or “Day of Portugal, Camões, and the Portuguese Communities”, is celebrated annually on the 10th June.
The National Day of Poland is on the 3 May (Święto Konstytucji 3 Maja, Constitution Day, 1791). Also the 11th November. (Święto Niepodległości, Independence Day which was the restoration of independence from Austro-Hungary (National Day of Hungary), Prussia, and Russia (National Day of Hungary) in 1918.
The National Day of the Philippines, also known as “Araw ng Kalayaan” or “Independence Day”, is celebrated on the 12th June. The day celebrates the country’s independence from Spanish colonial rule on the 12th June 1898. Read below on the history of the country and their day of independence.
The National Day of Panama is on the 3 November (Separation Day, declaration of independence from Colombia 1903). You can see from here what the history is behind their National Day or Day of Independence. Also see the public holidays in Panama.