Fixed date misalignment in date picker

src/monthmodel.cpp

@@ -155,7 +155,8 @@ QVariant MonthModel::data(const QModelIndex &index, int role) const
                 // Previous month
                 year = d->month > 0 ? d->year : d->year - 1;
                 month = d->month > 0 ? d->month - 1 : d->calendar.monthsInYear(year) - 1;
-                day = daysInMonth - prefix + row + 1;
+                int daysInPreviousMonth = d->calendar.daysInMonth(month, year);
+                day = daysInPreviousMonth - prefix + row + 1;
             }
 
             if (role == DayNumber || role == Qt::DisplayRole) {