You want the reader, when they click on a day, to be taken to a page with all of that day's entries -- correct?
Do you have daily archives? You can have calendars that point to daily archive pages, but only if you have configured MT to build them. I don't think MT's default configuration uses them.
For example:
This calendar links to daily archive pagesOn this site, the archive file template for "Daily" is
CODE
<$MTArchiveDate format="%Y/%m/%d"$>/index.shtml
And the calendar code for each day is
CODE
<MTCalendarIfEntries>
<MTEntries lastn="1">
<a href="<$MTArchiveLink archive_type="Daily"$>"><$MTCalendarDay$></a>
</MTEntries>
</MTCalendarIfEntries>
This site isn't a super good example, as we have four layers of archive templates: the main archive template, a date-based archive, a day-based archive and an individual archive.
Everything is done with MT, of course, but it isn't a standard setup. But hopefully that gives you some hints on how to make it work for your site.