If I click on the digital clock widget in the panel it folds out a calender view. The dates displayed in this folded out widget are wrong.

Reproducible: Always

Steps to Reproduce:
0. The digital clock on the panel shows Wed, 14.11 which is correct
1. Click on it, it folds out the calendar widget
2. It shows Thursday, 20. November 2012 on the right part
3. That's, wrong. Nov 20. is a Tuesday
4. If I understand the widget right, this should be Thursday, 22. November, which is the next red marked entry in the calendar (Thanksgiving US)

furthermore...
5. I click next month to show january 2013
6. the right list shows 
  Monday, 20. January 2013 and
  Saturday, 20. February 2013
7. both dates are wrong. I think it should be 21.1.2013 and 2.2.2013
Actual Results:  
2. It shows Thursday, 20. November 2012 on the right part

Expected Results:  
2. It should show Thursday, 22. November 2012


It seems to be stuck on the number 20. I'm adding a screenshot showing the January 2013 situation.