Historical Events
- Apr 17 First Unitarianism church service in England held by Theophilus Lindsey at the Essex Street Capel in London
- Apr 19 Christoph Willibald Gluck's opera "Iphigénie en Aulide", based on the play "Iphigenia in Aulis" by Euripides premieres in Paris
- Apr 30 Pope Clement XIV proclaims a universal jubilee for the second time
Famous Birthdays
- Apr 17 Václav Tomášek, Czech pianist, composer (Eclogues), and pedagogue, born in Skuteč, Bohemia (now Czech Republic) (d. 1850)
- Apr 21 Jean-Baptiste Biot, French physicist (Biot-Savart law), born in Paris (d. 1862)
- Apr 26 Christian Leopold von Buch, German geologist and paleontologist, born in Stolpe an der Oder, Margraviate of Brandenburg, Prussia (d. 1853)
- Apr 28 Francis Baily, English astronomer and describer of "Baily's Beads" during solar eclipse, born in Newbury, Berkshire, England (d. 1844)
