Question: Romania was declared independent from the Ottoman Empire by Kogalniceanu when?
About the article "Romania", section "Holidays".

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Under the treaty, Montenegro more than doubled its territory with former Ottoman areas, including Nikšić, Podgorica and Antivari (Article 1), and the Ottoman Empire recognized its independence (Article 2).
Serbia annexed the Moravian cities of Niš and Leskovac and became independent (Article 3).
The Porte recognized the independence of Romania (Article 5).
Romania gained Northern Dobruja from Russia (to which it was transferred from the Ottoman Empire) and ceded Southern Bessarabia in a forced exchange. 
In an 1866 "coup d'état", Cuza was exiled and replaced by Prince Karl of Hohenzollern-Sigmaringen, who became known as Prince Carol of Romania.
He was appointed Domnitor - Ruling Prince of the United Principality of Romania, as Prince Carol of Romania.
Romania declared its independence from the Ottoman Empire after the Russo-Turkish War, 1877-78 in which she fought on the Russian side.
In the 1878 Treaty of Berlin, Romania was finally officially recognized as an independent state by the Great Powers.
In return, Romania ceded the district of Bessarabia to Russia "in exchange" for the access to the ports on the Black Sea shore, and acquired Dobruja.
In 1881, the Romanian principality was raised to a kingdom and Prince Carol became on the 26 of March King Carol I of Romania.
The 1878–1914 period was one of stability and progress for Romania.
During the Second Balkan War, Romania joined Greece, Serbia and Montenegro against Bulgaria.
In the peace Treaty of Bucharest (1913) Romania gained Southern Dobrudja - the Quadrilater, the Durostor and Caliacra counties. 
The territory of actual Albania remained under Roman (Byzantine) control until the Slavic migrations of the 7th century, and was integrated into the Bulgarian Empire in the 9th century.
The territorial nucleus of the Albanian state formed in the Middle Ages, as the Principality of Arbër and the Kingdom of Albania.
The first records of the Albanian people as a distinct ethnicity also date to this period.
Most of the coast of Albania was controlled by the Republic of Venice from the 10th century until the arrival of the Ottoman Turks (Albania Veneta).
The area was conquered in the 15th century despite the long resistance of Skanderbeg by the Ottoman Empire and remained under Ottoman control as part of the Rumelia province until 1912, when the first independent Albanian state was declared.
The formation of an Albanian national consciousness dates to the later 19th century and is part of the larger phenomenon of rise of nationalism under the Ottoman Empire. 
Ottoman architecture was influenced by Persian, Byzantine Greek and Islamic architectures.
During the Rise period the early or first Ottoman architecture period, Ottoman art was in search of new ideas.
The growth period of the Empire become the classical period of architecture, when Ottoman art was at its most confident.
During the years of the Stagnation period, Ottoman architecture moved away from this style, however.
During the Tulip Era, it was under the influence of the highly ornamented styles of Western Europe; Baroque, Rococo, Empire and other styles intermingled.
Concepts of Ottoman architecture mainly circle the mosque.
The mosque was integral to society, city planning and communal life.
Besides the mosque, it is also possible to find good examples of Ottoman architecture in soup kitchens, theological schools, hospitals, Turkish baths and tombs.
Examples of Ottoman architecture of the classical period, besides Istanbul and Edirne, can also be seen in Egypt, Eritrea, Tunisia, Algiers, the Balkans and Romania, where mosques, bridges, fountains and schools were built.
The art of Ottoman decoration developed with a multitude of influences due to the wide ethnic range of the Ottoman Empire.
The greatest of the court artists enriched the Ottoman Empire with many pluralistic artistic influences: such as mixing traditional Byzantine art with elements of Chinese art. 
The Oriental Crisis of 1840 was the result of a political conflict in the eastern Mediterranean between Egypt and the Ottoman Empire, in the middle of a war between the two.
It was triggered by the nominal Ottoman governor-general of Egypt (but "de facto" independent and self-declared monarch) Muhammad Ali Pasha's aims to establish a personal empire in the Ottoman province of Egypt.