On the screenshot on the homepage https://schedule-x.dev/ the events are touching the left border of the box for the day, but there's a gap between the event and the right border of the box.
Google Calendar does that as well, and I found it quite ugly. I didn't know whether they did it deliberately (maybe I'm the only one who doesn't like it? or maybe there's some functionality associated with that that I haven't worked out?)
So I can't ask the developers of Google Calendar but I can ask you :) Is there a reason for laying out the calendar that way? Or is that just the convention now that Google Calendar does that?
I see you've obviously put thought into the design so I don't think it's an oversight on your part (although it may be on Google Calendar's part).