Romania celebrates 14 official public holidays each year, blending Orthodox Christian traditions with national commemorations. The most important national holiday is December 1st, Great Union Day, marking the unification of all Romanian lands in 1918. Easter is the supreme religious celebration, observed according to the Orthodox calendar. January 24th honours the earlier union of Moldavia and Wallachia in 1859, while St Andrew's Day on November 30th celebrates Romania's patron saint.