There are 4 weeks in January 2011
4 weeks and 2 days.
26
A little over 12 weeks from 1st January 2011 until 31st March 2011.
A little over 21 weeks between January 1 2011 and June 1 2011.
52 weeks and 1 day.
11 weeks and 5 days.
8 weeks and 2 days.
21 weeks and 4 days.
34 weeks and 3 days.
34 weeks and 5 days.
44 weeks and 3 days.
34 weeks and 3 days.