In computer science, the Lilian date is the number of days since the adoption of the Gregorian calendar on 15 October 1582.

Lilio's brother Antonio presented the manuscript to Pope Gregory XIII; it was passed to the calendar reform commission in 1575.

[5] The commission issued a printed summary entitled Compendium novae rationis restituendi kalendarium (Compendium of a New Plan for the Restitution of the Calendar), printed in 1577 and circulated within the Roman Catholic world in early 1578 as a consultation document.

[6][7] The processes of consultation and deliberation meant that the reform to the calendar did not occur until 1582, six years after the death of Luigi Lilio in 1576.

In particular, in Torretta di Crucoli (Crotone, Italy), a new astronomical group was created and dedicated to Luigi Lilio.