Roman historians dated the city's founding to April 21, though April 24 has long been observed in some calendars as an alternate commemoration tied to the Parilia festival honoring shepherds and the city's pastoral origins. The legend of Romulus and Remus, raised by a she-wolf, became the foundation myth for an empire that would dominate the Mediterranean world for centuries.
On the night of April 24, 1915, Ottoman police rounded up some 250 Armenian writers, editors, clergy, and political leaders in Constantinople, most of whom were later killed. The arrests opened a campaign of mass deportation and killing that would claim an estimated 1 to 1.5 million Armenian lives over the following years, an event now widely recognized as genocide.
On Easter Monday, roughly 1,200 members of the Irish Volunteers and Irish Citizen Army occupied strategic buildings across Dublin, with Patrick Pearse reading the Proclamation of the Irish Republic outside the General Post Office. British forces crushed the rebellion within a week, but the execution of its leaders transformed public opinion and set Ireland on the path to independence.
Discovery lifted off from Kennedy Space Center carrying the Hubble Space Telescope, a $1.5 billion observatory designed to see the universe unobstructed by Earth's atmosphere. A flawed mirror initially crippled its images, but a dramatic 1993 shuttle repair mission fixed the defect, and Hubble went on to capture some of the most iconic images in the history of astronomy.