Romania’s National Day (Ziua Națională), or Great Union Day (Ziua Marii Uniri), is an annual public holiday on December 1 to celebrate the unification of Romania.
Romania’s full independence had been recognized in 1878 but it was not until December 1, 1918 in the city of Alba Iulia, when Romania – made of Moldova and Wallachia at the time – was united with Transylvania, Crisana, Banat and the Maramures area. National Day has been celebrated in Romania since 1990, after the fall of the Romanian Communist Party.
- from timeanddate.com