Milesian calendar functions for Google Sheets.
Using the original Javascript primitive instead of the Basic made for Excel and OpenOffice.
No Moon computation.
Insert the 3 JS files as Google Sheet scripts in your Google Sheet.
Versions:
1.0: M2018-02-23: Initial version, mainly by translating Javascript elements into GS.
1.1: M2018-06-13: More comments.
1.2: M2019-01-16: Solar intercalation rule is same as for Gregorian calendar.
1.3: M2019-07-01: Year base date set à 7:30 UTC instead of 00:00.