@Kelemvor I pretty much bet it’s that setting - with it I get what you want:

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@Kelemvor I pretty much bet it’s that setting - with it I get what you want:

@Kelemvor It won’t overload anything. broadcastPastEvents is required to show old events.
@Kelemvor Actually, I think you might be right - does look hardcoded.
@Kelemvor do you have broadcastPastEvents: true, set in the default calendar app?
As for the #1 question, look at these config items:
startDayIndex
endDayIndex
That will adjust your view to specific days - startDayIndex: 0 will set it to start on the current day, and then continue for the number of days listed in endDayIndex
@Kelemvor the answers will lie within the following two CSS items. Using Sam’s link, feel free to play with the CSS then add whatever works to custom.css
https://www.w3schools.com/cssref/css3_pr_word-wrap.php
https://www.w3schools.com/cssref/pr_dim_max-width.php
@sdetweil right, but once you have the changes you want, you have to figure out how to implement them, and I’ve noticed with CX3 and some other modules, sometimes the dev window flat out lies where to stuff the CSS for final.
I think you’ll find that it’s because of the .cellDate property - it’s set to flex-grow: 3
Almost everything on that line is also connected to .cellHeader.
I disable the CW line manually (from habit, don’t know if it’s an option to do in config) along with a few other modifications (including eliminating weather through config):
.CX3 .cellHeader {
  text-align: right;
  height: var(--cellheaderheight);
  padding: 2px;
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  font-size: 100%;
}
/* Disable CW date */
.CX3 .cw {
	display: none;
}
This results in the header taking up the entire space.
Look for the .cellHeader properties in the main CSS file, and copy them over to your custom.css to mess with them all you want and see what happens.
Pay special attention to justify-content in .cellHeader in combination with the flex-grow in .cellDate
@sdetweil I’ve tried everything I could think of, and can’t get it to translate to custom CSS.