The Clock Museum Vienna opened on 30th May, 1921.
János Bauer was born on 30th May, 1776 in Debrecen (Hungary). Félix Delépine was born on 30th May,1789 in Saint-Nicolas d'Aliermont. Fritz-Henri Huguenin was born on 30th May, 1832 in La Chaux-du-Milieu. Rémy-Charles Aubé was born on 30th May, 1844 in Saint-Nicolas d'Aliermont. Rosine-Amanda Davenet was born on 30th May, 1845 in Saint-Nicolas d'Aliermont. Apolline-Stéphanie Carpentier was born on 30th May, 1850 in Sept-Meules, Seine-Maritime. Louis-Edmond Delépine was born on 30th May, 1858 in Saint-Nicolas d'Aliermont. Eugène-Alfred Sannier was born on 30th May, 1860 in Saint-Nicolas d'Aliermont. Jules-Alphonse Letellier was born on 30th May, 1866 in Saint-Nicolas d'Aliermont. Louis Philippe Eugène Audemars was born on 30th May, 1876 in Le Chenit. Eugen Beutter was born on 30th May, 1906.
Voltaire died on 30th May, 1778 in Paris. Arsène-Émile Fihue died on 30th May, 1848 in Saint-Nicolas d'Aliermont. Hermann Busch died on 30th May, 1888.