Box overflow if there are six weeks in a month

[brunorc]

In the layout photo and landscape, if a month spans over six weeks, the box is too small to nicely accommodate the last week and it doesn't look nice:

I tried to use minimum height attribute of SetCalendar, but above the value of 245pt it began to ruin the layout of the calendar box:

While it's safe to assume that most months would have 5 weeks, there might be cases where it would be 4 or 6.