When a month has 31 days, and the first day is at the end of the week. The calendar will looks like:
1 day at the first week.
28 days at the next 4 weeks.
2 days at the last week.
Then you need total of 6 weeks to display all the dates. This means that you need 42 days in your row to display the month correctly (6 weeks * 7 days)
So you have to set SingleViewColumns="42" if the SingleViewRows="1".
In case of January 2012 it look s bit strange to have whole empty week at the beginning, but if the calendar shows 7 days less, then in some other month it will be not able to display all dates properly. The calnedar is made to work with 6 weeks per page.
All the best,
the Telerik team
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