@sdetweil
You are right.
However the example seems somehow ambiguous (though config description) It might mislead someone.(like @UncleRoger or me) :D

@jubbles
To show 3 sequenced month-instances of the CX3 modules;

{
	module: "calendar",
	header: "US Holidays",
	position: "top_left",
	config: {
		maximumEntries: 100,
		maximumNumberOfDays: 365,
		calendars: [
			{
				symbol: "calendar-check",
				url: "https://ics.calendarlabs.com/76/mm3137/US_Holidays.ics"
			}
		]
	}
},		
{
	module: "MMM-CalendarExt3",
	position: "bottom_bar",
	config: {
		instanceId: "THISMONTH",
		mode: "month",
	}
},
{
	module: "MMM-CalendarExt3",
	position: "bottom_bar",
	config: {
		instanceId: "NEXTMONTH",
		mode: "month",
		monthIndex: 1,
	}
},
{
	module: "MMM-CalendarExt3",
	position: "bottom_bar",
	config: {
		instanceId: "NEXTNEXTMONTH",
		mode: "month",
		monthIndex: 2,
	}
},

I don’t use MMM-Carousel, so get a help from others.

@DDE12

Check whether some modules make unhandled exception error when it create DOM.

[CX3] Module is not prepared yet, wait a while.
getDom @ MMM-CalendarExt3Agenda.js:193

[CX3] Module is not prepared yet, wait a while.
getDom @ MMM-CalendarExt3.js:228

This message might imply some other module fails to create DOM at its start. (I’ll fix the CX3* modules not so strict to other module’s failure soon.)

By the way, It would be better;

• Remove all modules from config
• Then add one by one unless you meet the problem.

[UPDATE] 1.7.1

• ADDED useMarquee config
• ADDED noMarquee event Object attribute
  From now, too long title will be rolling as marquee or ticker style.
  

@GrandizerGo

To filter out the empty days

There could be 2 ways of approaches for your exact purpose. The each ways are different, so choose one.

1.

/* CX3A config section of config/config.js */
onlyEventDays: 5, // This will show 5 specific days which has at least one event on the day.

2.

Or you can hide empty days in the calendar scope with CSS.

/* css/custom.css */
.CX3A .agenda .cell[data-events-counts="0"] {
  display: none;
}

@greedyvegan That is not an error, just warning you can ignore it.

1.1.0 (2023-03-02)

Added : Chat API

@CDT
I’ve fixed it. Thanks for reporting it.

@Old_Death
I found out what was wrong. I made some mistakes in my previous updates, and there is still a missing one. I’ll fix it and update it soon.

MMM-CalendarExt3Journal

Magic mirror module for presenting events as daily/weekly journal style.

Screenshot

Features

Main Features

• More detailed view of events by day/week with specific time ranges.
• locale-aware calendar
• customizing events: filtering, sorting, transforming
• multi-instance available. You don’t need to copy and rename the module. Just add one more configuration in your config.js.

https://github.com/MMRIZE/MMM-CalendarExt3Journal