Basic routines in javascript for computations on calendars, with extended Date and Intl.DateTimeFormat and a Cycle Based Calendar Computation Engine.
From this site (https://louis-aime.github.io/calendrical-javascript/) you can test the calendrical routines tools, including the extensions of Date and of Intl.DateTimeFormat, and compare their results with those of the standard objects.
With the first panel, choose a custom calendar, then enter a date in this calendar. If you use the “historic” calendar, you can specify the switching day to Gregorian. With the next panels, specify the display options. You may choose a Unicode built-in calendar. The date projected are displayed in the last panels. The first panel also shows the week figures, with which you can specify a date.
Use this repository’s issues.