>Two days ago, I was 10 years old. Next year I'll be 13 years old. What date is it today?

30.12.2009 ---> two days ago, 10
31.12.2009 --->yesterday, 11
1.1.2010 ---> today,11
31.12.2010 ---> this year, 12
31.12.2011 ---> next year, 13