1 January Cuba Revolution Day 26 January Australia Australia Day 26 January India Republic Day 4 February Sri Lanka Independence Day 11 February Iran Anniversary of the Islamic Revolution 15 February Serbia National Day 16 February Lithuania Independence Day 24 February Estonia Independence Day 3 March Bulgaria Liberation Day 6 March Ghana Independence Day 17 March Ireland Saint Patrick's Day 25 March Greece Independence Day 16 April Denmark Birthday of H.M. Queen Margrethe II 17 April Syria Independence Day 27 April South Africa Freedom Day 27 April Netherlands Koningsdag / King's Day 3 May Poland Constitution Day 9 May European Union Europe Day 17 May Norway Constitution Day 25 May Argentina Revolution Day 25 May Jordan Independence Day 26 May Georgia Independence Day 28 May Ethiopia Derg Downfall Day 2 June Italy Republic Day / Festa della Repubblica 6 June Sweden Flag Day 10 June Portugal Portugal Day 12 June Philippines Independence Day 12 June Russia Russia Day 16 June Un