5000000000000000
About 13.
From September 1 to June 1 is a span of 9 months. Since there are about 4.33 weeks in a month, you can calculate the total weeks by multiplying 9 by 4.33, which gives approximately 39 weeks. Therefore, there are about 39 weeks from September 1 to June 1.
June, July and August is 13 weeks and 1 day.
21.6 weeks
There are a total of 22 weeks from January 1, 2010, to June 11, 2010.
There are 17 weeks and 3 days between September 1 and January 1.
26 weeks and 1 day.
A little over 21 weeks between January 1 2011 and June 1 2011.
74 weeks between June 1 2009 until November 1 2010.
13 weeks.
21 weeks (rounded down).
44 weeks and 5 days!