March 15 - National flag hoisted by Parliament
The ceremony was attended by President Janos Ader, Chief of Staff Tibor Benko, representatives of state organisations, diplomats, and several hundred others.
Following the ceremony, participants marched to the National Museum where Prime Minister Viktor Orban is scheduled to deliver a speech.
Commemorations of the revolution are also being held by ethnic Hungarian communities around the world.
The revolution and freedom fight was part of a series of uprisings in Europe in 1848. On March 15, citizens of Pest gathered in front of the National Museum and demanded independence from Habsburg rule.
Hungary's first independent government with Count Lajos Batthyany as prime minister approved a reform package called the April laws. Later, the uprising grew into a war of independence, stifled by Austria in late 1849.