App: LatinCalendar
Developer: James Derrick
Genres: Bildung

This is a very simple app, which displays the date in Roman format in the menu bar. Clicking the menu shows a scrollable calendar with all the dates in Latin.
 
Because it is a Roman date, it uses the Gregorian calendar.

Different forms of roman numerals can be used. Dates can be shown either as CE or AUC. You can choose to have upcoming events shown at the bottom of the calendar window.

Release notes:
Fixed problem where window background did not display correctly in High Sierra.