Kingdom Proclamation Day is observed in Montenegro on August 28. Although it does not have official status since it was abolished, the holiday is still recognized at the national level. This day commemorates the proclamation of the Kingdom of Montenegro in 1910. Montenegro gained independence from the Ottoman Empire in 1878 under the rule of Nicholas I, who played a significant role in establishing political relations that led to 30 years of peace. The holiday reflects on Montenegro's historical journey, including its alliance with Serbia during World War I and the subsequent occupation by Austria-Hungary. After being liberated by the Allies in 1918, Montenegro merged with Serbia, marking a significant turning point in its history. Kingdom Proclamation Day serves as a memorial for the events that shaped Montenegro's national identity.