What was Italian scientist Aloysius Lilius' globally significant chronological creation of 1582?
Aloysius Lilius Aloysius Lilius Aloysius Lilius (c. 1510 – 1576), also variously referred to as Luigi Lilio, Luigi Giglio, was an Italian doctor, astronomer, philosopher and chronologist, and also the "primary author" who provided the proposal that (after modifications) became the basis of the Gregorian Calendar reform of 1582. The crater Lilius on the Moon is named after him, as is the asteroid 2346 Lilio. In computer science, the Lilian date is the number of days since the adoption of the Gregorian calendar on 15 October 1582. Not much is known about the early life of Lilius/Lilio/Giglio. It is known that he
Aloysius Lilius due adjustment is applied." The papal bull ("Inter gravissimas") was issued on 24 February 1582 (year 1581 of the old Julian calendar), ordering Catholic clergy to adopt the new calendar, and exhorting all Catholic sovereigns to do the same. The year 2010 was the 500th year since the Lilius' birth; several activities were organized by Italian astronomers in order to recognize the great work performed by him. In particular, in Torretta di Crucoli (Crotone, Italy), a new astronomical group was created and dedicated to Luigi Lilio: Circolo Astrofili Luigi Lilio Torretta (C.A.L.L.T.). Aloysius Lilius Aloysius Lilius (c. 1510 – 1576),